The core philosophy of Cognitive Behavioral Therapy (CBT) can be summed up by a quote from the Stoic philosopher Epictetus: "Men are disturbed not by things, but by the view which they take of them."
CBT is a structured, goal-oriented form of psychotherapy that focuses on identifying and changing negative thought patterns and behaviors. Rational Emotive Behavior Therapy (REBT), developed by Albert Ellis in the 1950s, was the first true form of CBT. It takes a more philosophical and active-directive approach, asserting that our "irrational beliefs" are the primary cause of emotional suffering.
While traditional therapy might look into the distant past, CBT/REBT is focused on the "Here and Now." It provides clients with a toolkit to become their own therapists by understanding the mechanics of their own minds.