Hi, thank you for the request, and don't be afraid to ask people for help. We're all here for you.
My friends have told me the same thing before, but what you have to decide is if their right, or if you're just being yourself. You shouldn't have to change for anyone but yourself, but if you can honestly tell yourself (even though I don't know exactly the reasons for their comments) that you could be better, then it is possible.
its always possible, and you and your friends could know that. Its just a matter of hope.