People are terrified of other people or difficult projects because they tell themselves that they could fail or be rejected. Failure can lead to sorrow, regret, frustration and annoyance - all healthy, negative feelings without which people couldn't exist. But then they add, "I absolutely must succeed and must be loved by significant persons, and if I don't, it's terrible and I'm no good." Those are irrational beliefs. As long as people keep them, they'll be terrified of life and will put themselves down when they get rejected.
Albert EllisWhining about your own, others', or the world's failings is a main element in what we usually call neurosis.
Albert EllisTo err is human; to forgive people and yourself for poor behavior is to be sensible and realistic.
Albert Ellis