If you are interested in something, just try it. Do not think too much and do not mind other people’s opinions. When you succeed in doing one thing, the feeling of victory can build up a sense of self and can help you believe in yourself. After trying several times, you will find that you are more confident even if you are facing with big challenges.
If you have been beaten down long enough and think failure is a terrible thing, believing in yourself can seem impossible. Therefore, you should learn to have the right attitude towards failure. You need to know that failure is common in everyday life and it can happen to anybody. So you should consider failure as nothing more than an experience and believe that you can gain success one day