This may seem simplistic, but many, many people go through their days without doing anything fun. Studies have clearly shown that engaged activity breaks obsessive thoughts. Doing something fun will get you off the beaten track so that you can put things into perspective and get rid of negative feelings or thoughts that have been weighing you down. Not to mention the obvious: it’s fun! So whether your fun is skydiving, reading a great novel, swimming, playing with kids, or having a little romantic encounter with your significant other, the lesson here is to stop wishing or thinking about it—get out there and do it.