In the process of our journey to success, many of us over stress ourselves. You don't need to kill yourself because you want something so badly. With this you might miss the important moment of life, of living. Just relax and you will get there.
I know I always tell people that your success in life is directly proportional to your hard work, I don't mean you should work the whole 24 hours or 7 days. Take a time out and relax. Sometimes you get great ideas when you relax than when you stress yourself.