It is poorly written and could be clearer.

Basically what the guy is saying (in a convoluted way) is that every feeling has an A, B, and C tied to it.

A is the action
C is the FEELING that we get from that action

And B is between - it is the belief that creates that feeling.

So, say that your boyfriend doesn't call you. The "C" is how you FEEL.

A = Boyfriend not calling
C = I am very upset because boyfriend didn't call?

Why? Because some belief is causing me to feel that. If I believe that boyfriend SHOULD call every day at 7 pm, I will be hurt.

An alternative is:

A- Boyfriend doesn't call
C - I feel fine about it

Well, that's because there's a different B in between.

Does that make better sense?

I think that his writing is not clear.

But I think the concept is interesting. Basically, real psychotherapy, according to this guy, means that you are exploring a persons beliefs, and that actions or feelings may change as a result.

Anyway, PuzzleBug, it has nothing to do with being smart. Good writing should be easy to follow.