Regardless if it's school, work, or relationships I don't like rejection. I try to put myself out there but it never really works out the way I hope. I hate feeling like I'm not good enough.
Unfortunately, rejection is inevitable. Best advice I could give you is to always ALWAYS be kind to yourself. We are often our own worst enemy yet can be our own best friend. We are not here to impress or to please everyone. There will always be pros and cons.
Take rejection as a lesson and learn to accept yourself, both flaws and qualities.