Proving something to people is worthless, prove things to yourself where it counts.
Always be careful of what you say and do, Karma has a way of bringing it back to you.
Workforce Ethics With Humor.
Everyone makes mistakes in life, why beat a dead horse when you can't do anything about it. Pick yourself up, dust yourself off, and keep moving, life is full of lessons to be learned until we leave here.
Watch your actions towards others, it has a way of returning with a vengeance, it's called Karma.