I steal things
I'm a kleptomaniac and have been for some time. It started when I was 12-13 and didn't have money to buy anything (but who does at that age). I would steal out of necessity quite often, but soon the primary motivation became the rush that it gave me. I still continue to steal things to this day and I am nearly 30. Generally small things, but lots of them I need to stop this, it weighs heavily on my conscience.