Becoming more confident can totally turn your life around. It’s so much more exciting, fun, and nice to love yourself. You will find that you are less stressed and when you are stressed you are better able to handle it. You won’t be so hung up on tearing yourself down.
Plus sex. Sex is so much more amazing when you feel confident. You can dress sexier and feel comfortable doing it. You are more in tuned with what’s going on in the bed and less worried about what negative things your partner is thinking about you. (They aren’t thinking any of those things btw.)