It’s likely that we all now know that our emotions are a part of our psychology. Thoughts are also part of our psychology, as is our body’s senses. Everything we do and experience is part of our psychology. Therapeutic treatment might be potent to the degree that it addresses all these elements.
As we expand our understanding outward we also realize that thoughts become beliefs and expectations. These, in turn, affect our cognitive decisions and subsequent behaviors. Ultimately, our world view or philosophy and even our faith are all outcomes of thought, as well as being part of our psychology.