During this session, clients learn about core beliefs, which are powerful beliefs that exist deep within our brains and influence how we think. They are at the root, or the core, of our automatic thoughts about ourselves, and they can be positive or negative. In this chapter, clients learn what core beliefs are and where they come from—specifically, they can come from repetitive early experiences, or from a single formative, highly emotional experience. They will also learn about the relationship between negative core beliefs and negative automatic thoughts—specifically, that negative core beliefs, though usually outside of awareness, influence or shape automatic thoughts. Clients are taught the downward arrow technique to identify their own negative core beliefs.