Things that relieve stress for me (and I am very very anxious person in general): running/hard workouts (walking doesn't cut it for me), going out with some of my friends who are always a blast to hang out with and just drinking/dancing
However, the number one stress reliever is way too obvious. DOING something about the problem. (Haha -- and you thought I was going to give you some awesome solution, didn't you?) The second I make a decision and take some active steps towards creating a workable solution, the tension dissipates. Of course, sometimes this can be something you can't control -- but sometimes when you're faced with a situation that's difficult, like buying a new house when nothing out there is nice, the stress can cause you to procrastinate and worry more. The more you get out there, the faster you're going to find a house that you love, and the faster you do that, the faster you can calm down a little.
That's all I got.