Optimism.
First: realize that no matter how many times you've been rejected, you've also been accepted many times.
Second: rejection is not bad. It means you're not a good fit. That says something about you, about them, and about your mutual approaches to one another. Treat it as a lesson, an opportunity, rather than a judgment.
Third: develop a ritual. Write it down in big letters and pin it up on your wall. Say, "
In cases of rejection: I will...
- Withhold judgement. It's not anyone's fault.
- Walk in their shoes. What's it like from their perspective?
- Remember who I have been accepted by. There are good things about me.
"
It might help.