Hello @chbartist!
Particularly I see rejection as an opportunity to improve what we have to offer, because many times others may be right, and it may be that I am equitable with my ideas. So if you reject me, I can sit alone and rectify my ideas to see what is wrong and correct it.
And when I return to present my ideas I will be able to know if I improved and there are still details, I will even know if I am rejected only by whim or some reason other than my effort.