Johnny's therapist has asked him to write down every instance of a negative thought and to challenge each of these thoughts so they become less automatic. for example, johnny can attempt to gather evidence for his negative beliefs (which he probably will not find), or he can try to view the same situation from a neutral or positive point of view. the therapist who is treating johnny is most like

The correct answer is Aaron Beck. 

Aaron Beck is a cognitive psychologist and therapist who is known as the father of cognitive therapy. Beck claimed that our appraisal or evaluation of events and "negative automatic thoughts" lead to our emotions, behaviors and actions. According to his therapy model, monitoring and identifying our negative automatic thoughts and then proceeding to challenge them by looking for evidence that confirms them, or viewing the same situation from a neutral or positive point of view helps us make negative thoughts less automatic.