It just happens. And we should live with it.
You can change your life if you want to. Sometimes, you have to be hard on yourself, but you can change it completely.
When something bad happens, there's no point in wishing it had not happened. The only option is to minimize the damage.
Life's altered you, as it's altered me. And what would be the point of living if we didn't let life change us?
We must all have our hearts broken once or twice before we're done.