Hang in there. How long is your program, Flybye? Mine is 3 years. I feel like I'm getting a pass this year, because it's just classes. The next 2 years I have to do a 24 hour a week internship and manage to take 3 classes in addition. I am looking at the prospect of giving up 2 summer weekends to take classes to reduce my load for next year. Unfortunately, summer classes at my school are only in the weekend format.
My advisor didn't really get it when I said that I didn't know if I could give up 2 weekends of summer riding!
Are you in any kind of informal support group? I get together with a group of other "older" students once a month for dinner. It's a great stress release. Plus, we are going to continue doing this when we get out in the real world and have our own supervision group. But, that's a looong time away.