I was saying the same thing not a month ago. Until one day, i completely flipped out during a meeting, stormed out, insulted the owner, and never came back.
I had been working way to much for the past 4years, and on the months leading to the melt down, it was just unhealthy, and i kept going at it, using drugs to keep up (i am deeply ashamed looking back...), barely sleeping and eating. And slowly it creep up on me, until i completely lost it. By my foolish attitude, i had not only burn myself (its been a month, i haven't been out of my place, i haven't written a line of code - i tried, but just the sight of it makes me sick -), but also hurt my co-workers and company, who in the process have lost their Chief Engineer and probably the project i was working on as well -months of work, and in the 6digits investment-.
There are people you can talk too, if it's not friends, professional help is there, i know how hard it can be to admit you've screwed up your life and health, but for your own sake, go get some help, before it is too late.
Because when your mind says stop, it'll be past the point where you can fix this "easily", and you'll be stuck with your decision for months, may be years. Take control of your situation, before your mind does it for you...