The day will never arrive when you finally have everything under control — when the flood of emails has been contained; when your to-do lists have st… - Oliver Burkeman

Incremental theory' people are different. Because they think of abilities as emerging through tackling challenges, the experience of failure has a completely different meaning for them: it's evidence that they are stretching themselves to their current limit. If they weren't, they wouldn't fail. The relevant analogy here is with weight training; muscles grow by being pushed to the limits of their current capacity, where fibres tear and reheal. Among weightlifters, 'training to failure' isn't an admission of defeat – it's a strategy.

Let your impossible standards crash to the ground. Then pick a few meaningful tasks from the rubble and get started on them today.

Or consider the fraught topic of self-esteem. We tend to assume that having high self-esteem is a good thing, but some psychologists have long suspected that there might be something wrong with the whole notion – because it rests on the assumption of a unitary, easily identifiable self. Setting out to give your 'self' one universal positive rating may in fact be deeply perilous. The problem lies in the fact that you're getting into the self-rating game at all; implicitly, you're assuming that you are a single self that can be given a universal grade. When you rate your self highly, you actually create the possibility of rating your self poorly; you are reinforcing the notion that your self is something that can be 'good' or 'bad' in the first place. And this will always be a preposterous overgeneralisation. You have strengths and weaknesses; you behave in good ways and bad ways. Smothering all these nuances with a blanket notion of self-esteem is a recipe for misery. Inculcate high self-esteem in your children, claims Paul Hauck, a psychologist opposed to the concept of self-esteem, and you will be 'teaching them arrogance, conceit and superiority' – or alternatively, when their high self-esteem falters, 'guilt, depression, [and] feelings of inferiority and insecurity' instead. Better to drop the generalisations. Rate your individual acts as good or bad, if you like. Seek to perform as many good ones, and as few bad ones, as possible. But leave your self out of it.