Answer:
Cognitive therapy.
Step-by-step 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...