Don't let someone who did you wrong make you think there's something wrong with you. Don't devalue yourself because they didn't value you. Know your worth. If you have a couple solid people in your life you can trust, you're golden.
It wasn't supposed to end at all. But that's what happens when one person gives up and starts listening to every other person that's not involved and not to themselves or their other. Things that could've been repaired are then eternally broken.