I think the more you learn to accept and like yourself, the less you will feel those feelings of being alone and unliked. It has a nice beneficial side effect of making you feel more confident and confidence tends to draw people too. There is no exact way of doing this, I think everyone has different things that help them in this way. I hope you are able to find some answers but I think they will have to come from within you in order to give you a more lasting feeling of peace.
I fully agree with you K9soul, this happens to me as well. When I feel alone or withdrawn I'll be emmiting negative vibes and the people around me shut me out authomatically. I find that lisitng on a piece of paper positive things about me on a daily basis makes me feel better about me and people just cling to me. It is hard when you're down but you have to try han.

Take care xxxx