If you think you might have low self-esteem, try talking to a friend or relative you trust about it. He or she may be able to help you come up with some good ideas for building your self-esteem.
In the meantime, here are a few things that you can try to increase your self-esteem:
Make a list of the stuff you're good at. It can be anything from drawing or singing to playing a sport or telling a good joke. If you're having trouble with your list, ask your friend or relative to help you with it. Then add a few things to the list that you'd like to be good at. Make a plan to work on those skills or talents.
Give yourself three compliments every day. Don't just say, "I'm so great." Be specific about something good about yourself, like, "I was a good friend to Jill today" or "I did better on that test than I thought I would." While you're at it, before you go to bed every night, list three things in your day that really made you happy.
Remember that your body is your own, no matter what shape, size, or color it is. If you are worried about your weight or size, you can check with your doctor to make sure that things are OK. Remind yourself of things about your body that are cool, like, "My legs are strong and I can skate really well."