No one gives a shit: The 20–40–60 Rule

I guess we should cue this up by defining the 20–40–60 rule. We’re going to do that via here:

Originally spoused by actress Shirley MacLaine — and adhered to by Silicon Valley legend, entrepreneur and investor Heidi Roizen — the rule goes something like this: “At 20, you are constantly worrying about what other people think of you. At 40 you wake up and say, ‘I’m not going to give a damn what…

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