Can a person truly change, or do we always go back to who we really are?

You've watched people transform and you've watched people revert, and you're still not sure which one to believe in — especially when the person in question is you.

Change is easy to claim and hard to prove, and the older you get the more complicated the question becomes.

Do you believe people can fundamentally change — and have you ever changed in a way that surprised even yourself, or watched someone else do it?