Rational Emotive Behavior Therapy (REBT), proposed by Albert Ellis, holds that psychological problems stem from rigid and extreme beliefs that people hold. Cognitive Behavioral Therapy (CBT), proposed by Aaron Beck, views problems as arising from faulty and distorted thinking patterns. Both therapies aim to help clients identify and modify irrational and dysfunctional beliefs and thoughts through techniques like cognitive restructuring. Therapists dispute clients' irrational beliefs, teach alternative coping skills, and help clients learn to evaluate evidence to replace rigid views with more realistic perspectives. The goal is for clients to achieve emotional well-being by altering how they perceive and respond to events.