Self-confidence is believing in one's own abilities and having confidence in one's decisions, especially when facing challenges. It has two components: self-esteem, which is how much value one sees in oneself, and self-efficacy, which is believing in one's ability to accomplish tasks and reach goals. Developing self-confidence involves not being affected by others' opinions, taking on new challenges, asking for help when needed, dressing well and having good posture, communicating effectively, and being willing to apologize when mistakes are made. Confidence is key to success, and while some are born with it, others must work to develop it through facing fears and believing in themselves.