It's non-trivial to calibrate your work habits and psychology for maximum sustainable productivity for different tasks. "But but flow!" someone might say. To

It's non-trivial to calibrate your work habits and psychology for maximum sustainable productivity for different tasks. "But but flow!" someone might say. To which I'd respond: even flow has its weaknesses. Get flow-greedy for writing software, and you'll find yourself working late, eating crap, and not exercising. And it's different for different work. The mentality you need to be a good student is different than the one to be a good salesman, which is different from that required to be a good husband, etc. What I can say with confidence, though, is that it makes a notable difference. A long time ago I read an article linked here that talked about "stacking wins." Consistent success can deliver crazy rewards, because so many (more than in the past, I feel) areas of our lives are subject to vicious/virtuous cycles.