I was a lot like you once, until I suddenly realized that taking a step back every now and then actually brings a net positive in productivity because a lot of the time when you're busy and stressed what is actually happening is you're just doing work but not getting things done.
My suggestion to you: take a look at your todo's, delete everything that's been there for more than two weeks. Then delete everything where people don't die if you do it tomorrow instead of today.
Or, you know, completely disregard this comment, get back to your life, and watch yourself burn out faster than celluloid film.