Confidence is an increased sense of self-worth. The benefits of believing in yourself are valuing yourself and your abilities. The benefits of feeling good about you, experiencing less fear and anxiety, freedom from social anxiety, more peace of mind and less stress, and more energy
Tips on how to build confidence are visualizing yourself as you want to be, affirm yourself, do one thing that scares you every day, question your inner critic, and take the 100 days of rejection challenge. Other tips, set yourself up to win, and care for yourself. Developing confidence lessens anxiety, is a great motivator, improves relationships, and breeds empathy.
To conclude, confidence is an increased sense of self-worth. Try some of all of the above tips, and feel good about who you are. With many benefits, it makes sense to build belief in you.