Everyone does things that they regret in their own head. These things might be really harmless, or outwardly offensive towards a crowd. However terrible these things are, though, there is always a way to get past them and forget why you regret them so much. Things can get bad, and everyone makes mistakes; but that's just it, everyone makes mistakes. You can't be blamed for everything that you do, and you certainly can't be blamed for everything that happens to you.
If you regret something, you will feel like the loneliest person in the world. That's when you need to remember that there ARE people that care about you. There ARE people that would die for your safety. Just this knowledge alone, if truly understood, makes it so one is never alone.