Ellis hypothesized that human thinking and emotion are not two disparate or different processes. It was hypothesized that they significantly overlap. Our thinking, emoting and acting all interact together.
Nothing is experienced in isolation.
If you want to control the emotions, there are four major ways to do so. The first is by electric shock or with drugs. The second way to change behavior is to utilize another system such as physical movement or variation in breathing. Emotional states and prejudices can be seen as motives to change. The last way is to use your thinking and exert control with your thoughts.