You can think of this as the 90 Per Cent Rule, and it’s one you can apply to just about every decision or dilemma. As you evaluate an option, think about the single most important criterion for that decision, and then simply give the option a score between 0 and 100. If you rate it any lower than 90 per cent, then automatically change the rating to 0 and simply reject it. This way you avoid getting caught up in indecision, or worse, getting stuck with the 60s or 70s. Think about how you’d feel if you scored a 65 on some test. Why would you deliberately choose to feel that way about an
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