People who are comfortable with rejection tend to be rejected a lot. So what do you think your brain believes about the future ventures? What can I expect? It believes fundamentally that the world is a dangerous place where rejection is likely. All of these thoughts are actually protective. The difference between our expectations and reality, right? If we threw a birthday party and invited my best friends, they were prepped for it. We don't deserve something because it's way harder to believe in ourselves.