When I was a child, probably around eight or nine, my school had a raffle of various toys and games that had been donated. The prizes were all in display in one of the classrooms and I was particularly taken with a Cluedo boardgame.
It became the focus of my attention for a few days and ultimately, being eight or nine, it became the focus of my entire existence. I had to have it and was even prepared to try and steal it, if necessary. Or so I thought, as the opportunity presented itself the day before the raffle and I just couldn't bring myself to do something I knew was wrong.