To be confident
Confidence of success is almost success. Here’s how to believe in yourself.
Remember that everyone struggles with confidence. Some people are good at hiding it, but nearly every person has struggled with his or her self-confidence at one point.   
Accept compliment(恭维;敬意) politely. When someone compliments you, make eye contact, smile, and say “thank you”. It shows that you’re polite and have a secure sense of self-worth. If you’re still uncomfortable taking compliments, try giving one back after you’ve accepted one.     
That’s a simple and an effective psychological technique to become confident. When you are talking louder you are sending the signal that you are confident, and as you make it as a habit you will feel more confident. But don’t be dominating(专横的).
Look the part. Or, as the saying goes, “Fake it till you make it.”     Devote a little time each day to make sure you’re presenting yourself well. Keep your shoulders back, walk with purpose instead of dragging your feet, and sit up straight. Smile and make eye contact. It’s a small change, but it can work wonders on what other people think of you.
Develop your interests. If there’s a sport or hobby you’ve always wanted to be good at, now’s the time! Improving your skills will show that you are talented, and make you confident. Learn a musical instrument or a foreign language; take up an art form like painting----whatever it is that catches your interest.        Remember that learning is a process, and you’re in it for the small victories and the relaxing time, not to be the best ever.

A．Make a list.

B．You’re not alone!

C．Talk a little louder.

D．Stop comparing yourself with everyone else.

E. Don’t get discouraged if you’re not immediately awesome.
F. This can help you feel like the score is “even” and you haven’t been too prideful.
G. If you know that you look like a confident person, eventually you’ll start to feel it, too.