If you live in California, Amsterdam, Copenhagen for instance, maybe some pot for medical purposes would help?
Otherwise, I don’t think you can eat yourself from burnout. The real answer is probably, quit your job, if it’s killing you.
Then again, there might be some reason for experiencing a burnout at work. I’m thinking, something in the lines of not having proper control of all the tasks at hand. In which case, one suggestion that I can recommend (to some extent, though, I don’t fancy following it meticulously in each and every scenario, though), is taking a read in David Allen’s book about his methodology called GTD, aka Getting Things Done.
The stress relief of knowing what to do next and stop worrying about things that are too remote to even get a grasp about what you’re supposed to do and what it takes to do it, really pays off. GTD provides a good helping hand at that.