I’m probably a lot like you. If I am truly excited I can work endless hours, and be very passionate about what I do.
If I’m bored, I can gain 20 pounds in seven days, and become as lazy as can be. Somewhere in between these extremes, is a little more sensible.
Even Superman chilled at his Fortress of Solitude. My point here is this…start exercising, if you don’t already. Eat healthy; more raw fruit and raw vegetables. Let others help you grow, when you get to the point where you can afford to do so. Keep your mind in shape. Give it a rest. Do some meditation once in a while. It will help to renew you.
Above all else, if you get into a position of working ridiculous hours and you feel like you’re going to have a heart attack, stop what you’re doing and take it easy. Even if you love what you do, and you have a passion for doing it, you have to rest. Stay in top physical and mental condition, the small investment in time will yield dramatic results.