✔ 最佳答案
It's probably because of you doubt yourself, that you feel this symptom: crippling fear, which is called: anxiety.
You need to restore your self-confidence and too, self-esteem since you feel like: your presence being completely unwanted. Do a work on yourself with a psychoanalyst, they are specialized for fix the causes of your type of problem and many more... ( depression, phobia, manias, neurosis, etc... )..