It's a recipe for being a miserable high achiever, or worse. "The problem, though, is that this is still a future-oriented perspective. Yes, it helps you worry less about what’ll happen if you fail to meet your ultra-high standards next week, or next year. But it allows the sneaky perfectionist mind – I speak from experience – to keep secretly hoping that when that moment arrives, you’ll do perfectly after all." Oliver Burkeman considers in the Guardian.