We as humans have fear to protect us. We fear sharp things because we might get cut. We fear explosives because it might kill us.That being said in social interactions we have memory fear to protect our emotions. Whatever childhood experience or breakup made you fear abandonment and resentment.

This I have experience in I asked a friend out who was really nice to me. I asked her out and she rejected me. She would not talk to me or even greet me on purpose . I felt so bad that I ruined that relationship that I vowed not to be interested in a friend or pursue one nice to me as a result of my experience. Looking back now I missed alot of opportunities that way.

List a fear that is controlling your life. Once you decide to confront this fear. Begin repeating yourself :

"I can handle this. No matter what happens. I will handle this."

Keep repeating this until you have an unconscious behaviour towards your fear.