Positive thinking can be a very effective approach to boosting confidence

If you believe you can accomplish something, you are more likely to work hard to ensure that you do. If you do not believe you can accomplish anything, you are more likely to approach it half-heartedly and hence be more likely to fail. The trick is to persuade yourself that you can do something if you have the necessary help, support, preparation, and information.

Optimism is the faith that leads to achievement. Nothing can be done without hope and confidence. Helen Keller

The fundamental principles of positive thinking are to emphasize your strengths and triumphs while learning from your faults and mistakes. This is much easier than it sounds, and we frequently focus on things from our past that we are unhappy with, increasing problems that do not need to be worsened. These negative thoughts might harm your confidence and capacity to attain your goals.