Warm, personalized, and effective therapy for individuals and couples
Dr. Lewin is a Harvard-trained, licensed clinical psychologist offering compassionate, effective therapy for individuals and couples in Massachusetts and Illinois. She is dedicated to helping clients improve emotional well-being, strengthen relationships, and navigate life’s challenges with confidence.
With advanced training and extensive experience, Dr. Lewin integrates evidence-based therapies including Cognitive Behavioral Therapy (CBT), Acceptance and Commitment Therapy (ACT), Emotionally Focused Therapy (EFT), and specialized sex and couples therapy approaches such as Sensate Focus.
Understanding that every client’s needs are unique, Dr. Lewin tailors treatment formats to fit individual circumstances. Whether through weekly sessions or concentrated psychotherapy intensives, she offers flexible options designed to maximize therapeutic progress while accommodating busy schedules.
Her approach skillfully blends humor and sensitivity, validation and growth, and emotional exploration with practical skill-building. Clients value the warm, nonjudgmental environment she creates—one that fosters openness, healing, and lasting change.
Licensed in both Massachusetts and Illinois, Dr. Lewin provides in-person therapy at her Coolidge Corner office in Brookline and offers secure, confidential teletherapy sessions to clients throughout MA and IL.
Contact
10 Sewall Avenue - Suite 207
Brookline, MA 02446
rivian@thriveclinicalpsychology.com
(508) 834-7849
Dr. Lewin’s Clients
Dr. Lewin’s clients are often high-achieving and successful in many areas of their lives, and capable of managing complex projects, responsibilities, and external expectations. However, despite professional or social accomplishments, many of these individuals struggle internally, facing self-criticism, emotional rigidity, and difficulty accepting the more tender parts of themselves.
For Individuals:
Many of Dr. Lewin’s clients are used to managing their lives with precision, control, and prowess, but this approach can leave them feeling disconnected from their emotions, overly critical of themselves, distant from loved ones, and exhausted. They often experience anxiety, perfectionism, depression, or burnout as a result. Dr. Lewin helps these individuals shift from a “manage and fix” mindset to one that embraces emotional flexibility and self-compassion. Together, Dr. Lewin works with clients on reducing self-criticism, increasing self-acceptance, and learning ways to engage with their emotions that are more effective and better aligned with their true selves. Common psychological conditions in Dr. Lewin’s practice include: anxiety, perfectionism, rigidity, self-criticism, substance use, OCD, and depression.
For Couples:
Dr. Lewin works with high-achieving couples who may feel disconnected from each other, struggling to balance their busy lives with their emotional and romantic needs. Many of the couples Dr. Lewin treat describe their dynamic as ‘pragmatic, functional, managerial’ as much of their communication is focused on coordination of tasks and navigating the logistics of life. This can lead couples to feel alone in their partnerships, filling the space between them with ‘life management’ rather than deep emotional connection, intimacy, or desire. Couples often come to Dr. Lewin because they are "stuck" in patterns of conflictual or avoidant communication, feel emotionally distant, or experience sex/intimacy challenges (performance anxiety, misaligned sex drives, sexual avoidance, etc.). Dr. Lewin helps them navigate these challenges with empathy, understanding, and practical tools that foster trust, intimacy, and healthier dynamics. In addition, Dr. Lewin offers sex therapy to couples facing intimacy issues or sexual health concerns, helping them reconnect physically and establish positive sexual experiences.
Dr. Lewin’s Specialties
Anxiety
Obsessive Compulsive Disorder (OCD)
Obsessive Compulsive Personality Disorder (OCPD)
Perfectionism
Relationship Concerns
Sexual relationship challenges (sex drive misalignment, performance anxiety, etc.)
Substance Use
Self-esteem
Life transitions/grief
Dr. Lewin’s Services
Dr. Lewin provides individual psychotherapy to adults and adolescents navigating personal challenges, shifting life circumstances, and mental health conditions. Many clients seek therapy for issues like anxiety, perfectionism, obsessive-compulsive patterns, problematic substance use, fragile self-esteem, or difficulty managing intense emotions.
Treatment is individualized and integrative—drawing from evidence-based practices and always attuned to your personal values, identity, and strengths.
Do you and your partner find yourselves trapped in recurring arguments? Have you experienced a significant change or heartache, leaving you feeling more distant than connected?
Are you struggling with mismatched desire, performance anxiety, intimacy concerns, or changes in your sexual relationship?
Dr. Lewin’s couples therapy helps partners address persistent patterns, develop new ways of communicating and bonding, and cultivate a relationship that reflects shared values. With additional training in sex therapy, she also supports couples improve their sexual satisfaction, connection, and intimacy.
Are you highly motivated to change but find traditional 45-minute weekly sessions too brief and stretched out? Dr. Lewin offers psychotherapy intensives—customized, time-extended, concentrated therapy sessions designed to create meaningful progress in a shorter time frame. These extended sessions, provided in close succession, allow for comprehensive diagnostic evaluation, deep exploration, skill-building, and integration without the usual time constraints of weekly therapy.
Psychotherapy intensives are especially effective for individuals struggling with OCD, anxiety disorders, or couples working through entrenched relationship challenges. Intensives are a flexible and impactful alternative to weekly therapy. Dr. Lewin makes determinations about the appropriateness of using an intensive vs. traditional psychotherapy model on a case-by-case basis.
Happiness lies not in finding what is missing,
but in finding what is present.”
–Tara Brach
Get in Touch
Starting therapy is a big step—Dr. Lewin strives to ensure she is the right fit for what you’re looking for before you enter the first session. Set up a free, brief consult call to share what you’re hoping to gain so Dr. Lewin can assess if she can be helpful.