First, I would say try to limit your time on these boards. I think these boards are very helpful, but it is easy to become obsessed and check them 24/7, just so that you feel like you are able to check SOMETHING since you can't really check anything else to find out about your wait lists. I was like that around April when I was hearing from the last few schools. Maybe try to check it in the morning and at night, or even just once a day. I think you will find yourself doing less obsessing and less stressing if you don't check the boards every 8 seconds. Same thing goes for law school numbers.
Also, try joining a gym if you don't belong to one already. We all know that exercise helps reduce stress, and it also gives you something else to "obsess" (in a healthy way, of course) about, since you can have fun tracking your progress.
And maybe try writing a blog. Sometimes when you can get your thoughts out in the form of writing, everything in your head feels less jumbled and you can actually make some sense of everything. Even if you don't open it up for the public to read, I think it would really help.