Katherine O'Sullivan, LCSW

Katherine O'Sullivan is a licensed clinical social worker (LCSW) practicing in New York with 15 years of professional experience helping people navigate stress, anxiety, self-esteem concerns, depression, and life changes. She brings a practical, compassionate approach to therapy and draws on evidence-based techniques to tailor support to each person's situation and goals.

Throughout her career she has worked with individuals, families, and groups, and she has extensive experience with teens and young adults. Her work also addresses compassion fatigue and caregiver stress, as well as a wide range of concerns including communication challenges, control issues, guilt and shame, isolation, mood and panic disorders, social anxiety, and women's issues.

She treats every client with respect, sensitivity, and compassion, creating a collaborative process that honors each person's strengths and pace of change. Katherine focuses on building confidence, improving coping skills, and helping clients identify clearer purpose and more meaningful daily functioning. She recognizes that reaching out for help takes courage and offers steady, personalized support to guide clients toward greater well-being.

Evidence-based approaches and flexible online care

Katherine uses evidence-based therapeutic techniques that are practical and focused on helping clients build skills and resilience. One common approach she applies emphasizes skills training - teaching concrete coping strategies for anxiety, stress management, and mood regulation to help people manage symptoms and navigate difficult moments more effectively. Another primary focus is collaborative, talk-based work that explores patterns in thinking, relationships, and behavior so clients can gain insight, shift unhelpful patterns, and improve self-esteem and life direction.

Finding the right therapeutic approach is part of the work. Katherine partners with each client to identify goals, try approaches that fit the client’s needs and preferences, and adjust plans over time so therapy remains useful and relevant.

Online therapy with Katherine offers practical flexibility - sessions can take place by video calls, phone sessions, live chat, or text-based messaging. These options make it easier to access consistent care around other responsibilities and to maintain momentum between sessions while working with licensed professionals and therapists trained to support a range of life challenges.