IF we give 100 per cent, we will succeed – or at least that’s one of the motivational maxims that was instilled in us at school and when we entered the working world.

But Noel Gallagher and Fearne Cotton are two of the more famous names to have ditched that theory.

Noel says he only gives 75 per cent at gigs, while Fearne says she has started holding something back for herself, to stop getting anxiety.

Here, Lynsey Clarke and Rebecca Pascoe examine this and other workplace proverbs, while experts give their views on how valid they really are.

ALWAYS GIVE 100 PER CENT: Psychologist Professor Almuth McDowall, of Birkbeck, University of London, says: “Good work is about working smarter, not harder. We need thinking time to develop good ideas.”

And our bosses won’t thank us for pushing ourselves to our ­absolute limits either.

Elaine Owen, who is the director of online platform Women In Business and started her first company in 1994, says: “No one can give 100 per cent, 100 per cent of the time.

“You’ll end up burning yourself out, which will affect your productivity in the long run. Employers should realise that by offering their team relaxation, they can get better results.”

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