Stopping Ruminations

What do you do to stop ruminations? The only thing that seems to work for me is video games, but then I end up getting addicted to video games and becoming useless and lazy.

Try clearing your mind or some kind of meditation. It is possible to get to the point where you no longer have a stream of consciousness but instead choose your thoughts. You might also try replacing thoughts with more positive ones. Then sometimes you just have distance yourself from your past and learn to live in the now. Distraction is also a healthy alternative.