Avoid spending time around things that can make you feel bad about yourself again. These might be reminders from the past, places that don’t fit with your new goals of gaining confidence, friends that have refused to see the positive changes in you, or even clothes that no longer fit.
You can and are able to get rid of every negative source in your life. Yes, it is very possible! And this will go a long way in helping to build your self-confidence.
Take the time to write down all the things you know that are contributing to your negativity, literally eliminate them one after another, see yourself releasing yourself from them, could be mean friends, an unbearable relationship, a career that isn't your calling etc. Let it all go.. What is life if you can't enjoy peace of mind and happiness? Every human being deserves a good life and a good living! Don't you ever forget that!