The discomfort we feel when two thoughts are inconsistent is called

Cognitive dissonance

Explanation:

Cognitive dissonance theory was proposed by Leon Fe-stinger. The cognitive dissonance theory refers to the situation which is related to the conflict between belief, behavior, and attitude. It is about to reduce the conflict between belief, thought, attitude and behavior of a person. Leon Fe-stinger told us that all human beings have harmony as well as dissonance related to our attitude or behavior that is held by our inner state is called cognitive consistency. When there is happened some inconsistency between these thoughts, belief, and attitudes create dissonance. To reduce that inconsistency person needs some changes in his belief, behavior, and attitudes.