Get some things happening. Not only practice rejecting but practice accepting and rejecting later after it is apparent it is not up to your expectations. Quite often singles come into a group and say, Lets go. There is no one here despite the fact that there are 50 people there. They reject everybody.
Nobody is good enough.
Until I really meet someone special I reject everybody. Like the artist that says, Boy, all these scenes are imperfect. 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.