Although I risk more criticism from my beloved littlestar for again citing a game-related thing, this article about winning (in the game Magic: the Gathering) by Noah Well is actually a really solid bit of general-purpose life advice. Three excerpts:
Do you ever feel you're "due" a win? If the answer to any of this is yes, than you have entitlement issues. Luck doesn't owe you anything, and that especially includes favorable treatment. The winds of fate blow both ways. If you get mad because you feel singled out, you're in for a rough time. The good news is that lady luck doesn't hate you. The bad news is that she doesn't care about you at all.
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Essentially, don't believe everything you read. If something resonates with you, give it a shot. If it doesn't work, you move on. There's no author writing who's infallible, and nothing is set in stone. It's always about what works for you.
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I know from personal experience Magic players can function on zero support. To tell the truth, I've qualified for Pro Tours off nearly zero quantities of sleep, food, and water. I was much younger than, but even so, why put yourself through all that? At the end of the day, blue envelope notwithstanding, my body still felt utterly wrecked. Plus I know I played worse on no food and no water than without; how could you not? There's no reason to cost yourself additional edge.