While confidence is a great thing to have and we all strive to feel the best we can about ourselves we're all people with insecurities; I know I have a lot of them. What should be more valuable to others is integrity and genuineness and if that's not valuable to someone I've found it's best they're not in your life to begin with. I've applied this to anyone in my life (friends, family, romantic interests) It's been very trying and frustrating because it seems a lot of people only want to be involved with you if you have things they need provided outside of just your companionship and love; I hope you meet some quality people soon friend.