> Success should be identified. Every individual is good in something and can excel on that. Focus on your talents. Give yourself permission to take pride in them. Give yourself credit for your successes. Inferiority is a state of mind in which you’ve declared yourself a victim. Do not allow yourself to be victimized.
> Looking at the mirror and smiling also helps. This is called "Facial feedback theory" that suggests that the expressions on the face can encourage the brain to save certain emotions. By looking in to the mirror and smiling everyday can make feel happy and more confident in longer run.
> Eating healthy food and exercise regularly. Adrenaline level will increase while exercing and that makes one happier and healthier. It is the most effective way to increase self-confidence.