When I was younger, in a lapse of judgement, I stole chocolate bars from a shop I used to work in. I was caught. I felt terrible. It wasn't like me at all. I wish I could undo my actions.
I think many children including myself stole things before they were taught it was wrong to steel.
That's true. I wasn't really a child though! I was at university! We all have little devils inside us, I suppose.
I would not beat yourself up over the mistake. We all make mistakes even when we are older and should know better. 
Thank you, that means a lot.