Get something happening. Not only practice rejecting but practice accepting and rejecting later after it is apparent it is not up to your expectations. Afraid of being hurt again, Don't want to give up your freedom. You don't want to try to live up to someone's needs, demands and responsibilities. They reject everybody.
Nobody is good enough.
Until I really meet someone special I reject everybody. Eighty per cent of the specials you'll never get to meet that way, according to Bach, because you won't know they are special. Something wrong with them all. I'll never paint until I find the perfect scene. After years and years of looking and looking one day he finally found the perfect scene to paint.