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Exposure and Response Prevention is the gold-standard, evidence-based treatment for Obsessive-Compulsive Disorder (OCD) and many related anxiety disorders. ERP uses a structured, collaborative approach that helps you face fears gradually, reduce anxiety, and stop relying on compulsions or safety behaviors.
We begin by identifying the thoughts, situations, sensations, and triggers that fuel your OCD or anxiety. From there, we build a personalized exposure hierarchy—a step-by-step list of challenges ranked from least distressing to most. Exposures may include real-life (in vivo), imaginal, and interoceptive exercises tailored to your specific fears.
You start with small, manageable exposures. Together, we practice approaching triggers while intentionally resisting compulsions and rituals. This teaches your brain—through direct experience—that anxiety naturally decreases without needing to neutralize it. Over time, this leads to habituation, greater confidence, and an increased ability to sit with uncertainty.
As anxiety decreases at each stage, we move up the hierarchy at a pace that matches your readiness. ERP doesn’t remove intrusive thoughts; instead, it helps you change your relationship with them, so they no longer control your decisions or daily life.

Many people who engage in ERP notice meaningful improvements as treatment progresses. Research over several decades shows that ERP can significantly reduce symptoms and help individuals with OCD and related anxiety conditions regain a greater sense of control in daily life. While everyone’s experience is different, ERP is widely recognized as a highly effective, evidence-based approach.
Common improvements include:
ERP helps retrain how the brain responds to fear by using two key learning processes: inhibitory learning and habituation.
Inhibitory learning happens when you face a feared thought, sensation, or situation without relying on compulsions or avoidance. Each time you do this, your brain learns a new message—“This fear is tolerable, and I can handle it.” Over time, these new learning pathways become stronger and begin to override old fear associations.
Habituation is the natural reduction of anxiety that occurs when you stay with discomfort long enough for distress to rise, level off, and then decrease on its own. This teaches your nervous system that fear is temporary, survivable, and does not require escape or rituals. Together, inhibitory learning and habituation help reduce compulsions, lower overall distress, and support long-term improvement.
ERP treatment often begins with two sessions per week, which helps build momentum, deepen new learning, and reduce compulsive behaviors more efficiently early in the process. As symptoms improve and confidence increases, most clients gradually step down from:
2 sessions per week → 1 session per week → biweekly → monthly or as-needed
Treatment intensity varies depending on symptom severity, duration of the problem, motivation, consistency with exposure practice, co-occurring conditions, and overall stress levels. ERP is most effective when practiced consistently and individualized to your needs, though—like all treatments—it cannot guarantee specific outcomes.
ERP is highly effective for:
As well as for;
Traditional talk therapy can be valuable for insight and emotional support, but it often does not interrupt the fear-avoidance cycle driving OCD and related anxiety disorders. ERP directly targets the patterns that keep symptoms stuck by helping you:
Because ERP is structured, targeted, and results-oriented, many clients experience meaningful improvement in months—not years—making it both effective and cost efficient.
Licensed in California and available to clients in Los Angeles, Long Beach, Orange County, San Diego, San Francisco, and surrounding areas.
Whatif Therapy
based in Lakewood, CA
Whatif Therapy | Matthew Baker, LCSW (CA #121926)
ERP therapy for OCD and anxiety-related disorders.
Serving clients across California via secure telehealth.
Updated January 2026
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