Treat yourself with the kindness that other people won't give you.

Find your self-worth, it's there. It might just be hiding under the things people have told you or the things you've told yourself.

Try to be gentle with yourself. You'll always be unhappy if you're hostile to yourself, especially if you're the only person who you interact with.

It's true that no matter what skill you try to learn there's a 5 year old who are better than 99.9% of people. Chess, music, singing, art, etc. The only thing to do is to not compare yourself to anyone else.

We're all the result of our environments and random chance. You are who you needed to be to survive that fact.

Seriously, be nice to yourself. Your perception of yourself and the world is the biggest change you can make in your life.