Just because someone stumbles and loses their path, doesn’t mean they can’t be saved.
When you’re seventeen to early twenties, that’s the time you’re trying to work out who you are. If you’re trying to make some kind of artistic or creative impact, that’s the age when you start to figure out how to do that.
You think the dead we loved ever truly leave us? You think that we don’t recall them more clearly than ever in times of great trouble? Your father is alive in you, Harry, and shows himself plainly when you have need of him.