Who we are
A collective of marriage and family therapists dedicated to supporting families, couples, and individuals navigating relationship dynamics and life transitions.
What we do
Leading with curiosity and compassion, we offer a personalized, holistic, and integrative therapy that creates a safe and nurturing space for growth.
We’ll help you deepen connections and transform how you relate to yourself and others, paving the way for a more authentic and fulfilling life.
Who we serve
Individuals, couples, and families through counseling, therapy, and mental health services.
Why work with a marriage and family therapist?
You might be surprised to learn that Marriage & Family Therapists are trained to work with relationships and individuals!
We help you consider your role in larger relationship systems to help you identify and navigate emotions, thoughts, and behaviors.
Collectively, the team at Definition has over 10 years of training and 14 years of value-aligned experience, preparing to care for you and your relationships.
Explore our services
Our Core Values
Collaboration
It’s all about transparency, informed consent, and shared decision-making. Establishing a healthy therapeutic relationship sets the stage for helping you and your relationships.
Inclusivity
We’re respectful of all values, cultures, backgrounds, and histories. We seek to understand your worldview and lived experiences without judgement or assumption. Our cultural humility and trauma-informed approach strives to ensure that you feel seen, heard, and supported.
Curiosity
We champion curiosity as a driver of self-discovery and growth. We hold space for introspection and meaningful conversations. We uncover deeper insights and foster self-awareness for truly compassionate development.
Integrity
We uphold an unwavering commitment to our field’s ethics, laws, and standards. To do this successfully, we’re committed to life-long learning and continuous improvement. Our goal is that every client, peer, and employee feels safe, respected, and valued.
A message from Arlyn Rozanski, LMFT
Welcome to Definition Counseling & Therapy. At our practice, we recognize that only you are the expert of your life.
Our team is here to meet you where you are, engage you in self-exploration, and help you better understand yourself and your relationships. Ultimately, we strive to challenge and empower you to create meaningful change to live the life you want.
Meet Our Compassionate & Committed Team
At Definition Counseling & Therapy, we do our best to model openness, humility, and vulnerability to create a space where you can express yourself authentically. We value genuine connections and foster therapeutic relationships based on mutual respect and trust.
We want you to get to know our therapists to find the right fit. If you’re unsure, we can help you find your match.
Arlyn Rozanski, LMFT
Jillian Mizraji, LMFT
Whitney DeMeuse, MSMFT
Peyton Pichel, Practice Manager
Education & Credentials
Licensed Marriage & Family Therapist
Master of Science from Northwestern University
Marriage & Family Therapy
Bachelor of Arts from Lake Forest College
Major in Psychology
Minors in Neuroscience & Communication
Arlyn Rozanski, LMFT
(she/her/hers)
Approach
I’m caring, collaborative, and relationship-minded. I'll encourage you to engage with vulnerability and actively explore change.
Focus Areas
Kids, teens, adults of all ages
Identity exploration, conflict, stress, anxiety
Currently Into
Dare to Lead by Brené Brown
Loving with the Brain in Mind by Mona Fishbane
Self-Compassion by Kristin Neff
Availability
Telehealth & Office
more about Arlyn
Arlyn Rozanski, LMFT
(she/her/hers)
From personal experience, I know how much these services are needed.
My family, like so many families, could have really benefitted from working with a marriage and family therapist during life’s challenges. Often a circumstance that primarily impacted one of us also affected the rest of us in one way or another. It would have been helpful to find support together.
When I learned about systemic therapy while studying psychology during undergrad, I found the approach to be a natural fit with my own perspectives and experiences.
Later, I earned my Master of Science in Marriage & Family Therapy through Northwestern University and worked in community mental health and private practice settings before opening Definition. I created Definition to be a space for defining a new way forward, together
Want to know something funny? I almost gave up on my therapy career to become a flight attendant! I’m glad I stayed the path because there’s so much work to be done to improve options for us all.
← back to team
Education & Credentials
Licensed Marriage & Family Therapist
Master of Science from Northwestern University
Marriage & Family Therapy
Bachelor of Science from University of Georgia
Major in Human Development & Family Services
Minor in Human Services
Jillian Mizraji, LMFT
(she/her/hers)
Approach
I’m direct, warm, and focused. I’ll challenge you while also being your biggest cheerleader.
Focus Areas
Young adults, adults
Identity exploration, perfectionism, dating and relationship anxiety, premarital work, infidelity
Currently Into
The Gifts of Imperfection by Brené Brown, The Perfectionist's Guide to Losing Control by Katherine Schafler, The Miracle of Mindfulness by Thich Nhat Hanh
Availability
Telehealth
More about Jillian
Jillian Mizraji, LMFT
(she/her/hers)
Hi, I’m Jillian! A Licensed Marriage & Family Therapist who works with individuals and relationships of those in their teen years or older. I am a strength-based therapist with an integrative approach to therapy who is a firm believer that therapy is an aid to your own continued development and process. Some focuses I enjoy working with are anxiety, perfectionism, identity, depression, and the “I don't know what's happening” areas of life.
I appreciate transparency, collaboration, willingness, balance, and curiosity within the therapeutic space. And therapy with me is warm, direct, and focused.
I value a good fit as we build our therapeutic relationship to ensure that you are able to get the most out of our time together. I laugh at myself and encourage you to show up as you are. I also encourage and guide you to bring the tools we discuss into the outside world.
I love my job for many reasons, one being that I get to empower others to trust themselves and their choices. I am both clients’ number one cheerleader and someone that pushes them to their limits. Together, we work toward making intentional changes that continue to help you grow. I look forward to connecting and being a part of your journey!
← back to team
Education & Credentials
Master of Science from Northwestern University
Marriage & Family Therapy
Bachelor of Arts from University of St. Thomas
Double Major in Psychology & Family Studies
Whitney DeMeuse, MSMFT
(she/her/hers)
Approach
I'm compassionate, collaborative, and direct. I'll demonstrate that I'm here to support you and help you reach your goals.
Focus Areas
Kids, teens, adults of all ages
Relational conflict, emotional dysregulation, grief/loss, anxiety, past trauma
Currently Into
It's OK That You're Not OK by Megan Devine, Love Every Day by Alexandra H. Solomon, Burnout: The Secret to Unlocking the Stress Cycle by Emily & Amelia Nagoski
Availability
Telehealth & Office
More About Whitney
Whitney DeMeuse, MSMFT
(she/her/hers)
- Compassion—I believe compassion is a step above empathy. I sit with and feel my clients’ emotions alongside them; however, I also take action to demonstrate that I am there to support them and help them.
- Clear Communication—I encourage collaboration and open feedback from my clients throughout the course of treatment. I strive to ensure my clients know what to expect and that we are on the same page. Furthermore, I consider myself to be direct; I never wish to waste my clients' time, and I am there to help them achieve their goals.
- Cultural Humility—I take a client-centered approach and hold the belief that the client is the expert on their own life. I work with an open mind, take a non-judgmental stance, refrain from making assumptions, challenge any implicit biases that may arise, and always approach my clients with curiosity.
I practice Integrative Systemic Therapy, which allows me to utilize various therapeutic models and theories to tailor treatment to best fit each client’s unique needs and work with a wide range of presenting problems. Some specific areas of interest I especially enjoy working with include relational conflict, emotion dysregulation, grief/loss, anxiety, and past trauma. I also have a special passion for working with children and families. I hope to meet you soon!
← back to team
Education
Bachelor of Arts from Lake Forest College
Major in Art History
Peyton Pichel, Practice Manager
About
I’m Peyton, Definition’s Practice Manager. You will likely work with me as I oversee our intake process, billing and insurance, and daily operations. I’m here to advocate for you and ensure our practice remains aligned with our values. I’m dedicated to enhancing the client experience and making sure you feel valued, supported, and empowered in your journey toward growth!
Currently Into
I’m a gardening and cooking aficionado who tends to go a bit overboard! Whether I’m growing a mini rainforest in my backyard or attempting an elaborate recipe, my enthusiasm always makes for some entertaining (and sometimes messy) adventures.
Have a question?
You can reach me via email at
inquiries@definition-chicago.com
← back to team
Clinical Supervision
Professional Development
As part of our commitment to bettering our field, Definition offers systemic supervision to graduate students and associate-level marriage and family therapists.
We empower supervisees to become the therapists they want to be while ensuring they cultivate a deep understanding of our ethics, laws, theories, and models.
If you’d like to learn more about clinical supervision for your students or your own professional growth, please contact Arlyn for more information.
Get in touch
Our Favorite Reads At Definition
Our clients are always asking us for reading recommendations!
Take a look at some of our favorite books for personal development, families, relationships, and understanding the science behind emotions.
Additional resources, podcasts, and videos are available on our Resources page.
None of these are affiliate links or an endorsement - we just believe a lot of people may find them beneficial!
For a better tomorrow
Ready for insight and guidance beyond the self-help pages?
We are here for you, whenever you are ready.
Get started today
Explore services
Definition Counseling & Therapy © 2022-2024 | All Rights Reserved | HIPAA Notice | GFE Notice | Site Credit