I completely understand how you are feeling. I feel the same way a lot of the time. I regret so much in my life. I will say one thing. There are few things that are guaranteed in life. One of those things are that we will hurt, and be hurt. Sadly, it is a part of life. We can't blame ourselves for hurting others because those others have hurt as well, and if they can't forgive you that is their problem.

One of the worst things I have noticed, and the biggest "downers" in life, are the fact that we SETTLE. We only live once. We shouldn't settle, yet so many lives are ruined and families broken up because of settling. We settle on a partner and spouse, a house, a job, and our lives in general. That is one of the biggest issues I feel that we humans face.

So how can you overcome this? It starts with confidence. Never say "I am not good enough". You deserve to be happy just as much as the next person. The next step is to set goals for yourself. Find out what you really want in life, and then focus your energy on that. This can be easier said than done, but it is small steps. When we are really unhappy with our lives, we have to
o what we can to fix our problems with it.

I recently had something rather tragic happen in my life, and it really made me think. I decided to go back to people I have hurt, and apologize. A heartfelt apology. It helped me, because not only were most of them were accepting of my apology, I also saw that most were living their own lives and rather happy. I am not sure if that can help you or not, but it is an example.

I hope my post has helped you in some way, or opened up your mind a bit. Good luck to you, and I hope it gets better soon.