Do you have goals and dreams? If so, Confidence and Self Esteem will play a significant role.
Confidence is feeling good about your worth or abilities; self-respect.
Self Esteem is a feeling of self-assurance. An appreciation for your abilities or qualities.
You need both, and you get them through your daily experience.
Everything you do today is an opportunity to become a more self-confidence person. A person who appreciates you and has self-respect.
There is no secret to building self-esteem in yourself. Do what you do. Do it well. Acknowledge your success. Repeat.