The idea behind is that how you think determines how you feel and act.
cognitive therapy
cognitive-behavioral therapy
behavior therapy
client-centered therapy

cognitive therapy

Explanation:

The idea behind cognitive therapy is that how you think determines how you feel and act. So basically when a type of thinking creates stress, cognitive therapy allows that specific thinking to not cause you stress anymore.

Cognitive therapy.

Explanation:

This approach main idea is that your thoughts (actually, mental patterns) have an great impact on: 1) your feelings/emotions, 2) your behavior, 3) the effect of your behavoir that - in return - confirm your mental patterns.

This can be also a statement of cognitive-behavioral therapy.

For instance:

Thought/pattern: I am ugly and not interesting person.

Emotions: I feel shy at the party.

Behavior: I stay on a side, not joining any conversation,

Effect: No one dances with me at the party.

Thoughts: I am ugly...

answer; (b) capitalism;