On the contrary. Endocrinology is more closely tied to psychology than most give it credit for. Neurotransmitter levels are the major force behind certain emotional responses. Sure, endocrinology is not psychology, bluntly speaking. But they both revolve around the way the mind works, which is what is most interesting to me. Anyone who has done coke and had a dopamine spike knows what I'm talking about. I could perhaps be compelled to agree with your first statement after a few hours of discussion. Your second statement is quite true. Suggesting that endocrinology "revolves around the way the mind works" is a big stretch however. It sounds to me like you'd be interested in biochemistry, neurology, microbiology, or even medicine. Endocrinology, by definition, deals with hormones which by definition don't really have (direct) effects within the brain.