Why did he deserve better than you? Are you that horrible? Having known a lot of people in my lifetime, never have I come across a failed relationship where all of its problems were caused by one person. No one is worthless and undeserving. From your post, it sounds like you need to work on some things for yourself, but that doesn’t mean your feelings, happiness, or sense of self should be in any way discounted. Good luck, and I hope things start looking up for you. :)