I couldn't sleep well for weeks, and it was probably the hardest decision I had to make. It all boils down to what you want to do - the reason I went back to school (I have 2 years left as well) is because I can work the rest of my life, but the times I've had at school won't be available in 2 more years, when my best friends have graduated.
The way I solved it was by flipping a coin. Heads - I'll stay; Tails - I'm going back to school. If you have any doubts when it lands on either, I think the decision has been made.
In your case, seeing you're in your mid-twenties and was going to return back to school at a different one, that would be a heavy factor. I'd just make sure you're taken care of and get all of the logistics worked out if you do end up staying.
Good luck - let me know if you'd like to talk about it at all. Contact info is in my profile.