Yep, for the uninitiated, Cognitive Behavioral Therapy (CBT) is a standard and empirically-proven set of techniques used by many therapists to treat negative feedback loops (destructive self-criticism). It's basically a set of exercises to reframe one's thoughts.

There's a workbook (Mind over Mood 2e, Greenberger & Padesky, $18 on Amazon) that is often recommended.

I don't suffer from any kind of mental illness but even so have found CBT useful for managing my day-to-day emotions.