Ok, sounds like you're stuck in a rut. If you're ready for it, I think it's time for some positive healthy change.

Do you exercise or have you considered it ? As someone who suffers with low confidence, I must say that there is almost no better way to regain/boost your confidence than by exercising and being, feeling, and looking healthy and fit. The benefits of exercise are as much psychological as they are physiological.

I'd give this some serious thought, if you haven't already. Exercise can really turn your life around, if you're willing to invest time and effort. It saved my life ... no exaggeration.