Overworking oneself is foolish. Great labor is made with precise work in clear thought, under a nourished and well-recovered body. Strokes of genius on the other hand, can be better aptly recognized for their origin of the mad spurious scientist. Software development usually does not involve too many strokes of genius. The hardest part is being precise, and being comprehensive. Do not take stimulants, code like a maniac, and kill yourself to build something. Build it calmly and collectively. This will reduce regret, and ensure that you do not sacrifice your health for a lucky strike.