If you wouldn't let someone else tell yourself this, why do you say these things to yourself?

You're crap, you're worthless. Why do you even try?

You've already had all the success you're entitled to. Time to give up.

No one really likes you. They're just pretending to be polite.

It's just a matter of time before they see through you, and then it will all be over.

You used to be someone who mattered, and look what happened to you! You've changed, and not for the better.

No one wants to hear how you really feel. Just keep it locked inside and put on a happy face.

Do all the things that other people tell you to do, and none of the things you want to do, because that's what you deserve. That's how you get along in the world.

Let people take, take, take. No one will ever give to you, anyway.

What you think is wonderful and amazing is really stupid. Try to be more like other people and like and do what they like and do.

Just keep doing what you've always done. Don't try anything new. It's too scary.

Try instead these:

It will get better. Not tomorrow, or the next day or next week, but one day.

People need to know how you feel to help you. Give them a chance, at least.

You are good. You are just hurting right now.

There are people who love you, if you will let them.

You have done some things wrong, but many more things right.

You will do great things again. You may be on the path to a great thing right now, if you give yourself space and time.

The people who hate you don't matter. Let them talk, and you get on with your work.

Try something new. You might fail, or you might succeed. But if you don't try, you'll never know.

Happiness can be yours, if you insist on it and work toward it.

You bring a unique light to the world. Let it shine!

By the way, it is so much easier to come up with the first list than the second.