The secret is to change your environment so it works for you rather than against you.
These simple strategies are far more likely to succeed than willpower alone.
It's easier to change your environment than to change your mind.
People don't think that something as simple as the size of a bowl and eating away from the TV would influence how much a person eats.
Dr Wansink, of America's Cornell university, said that people had the mistaken belief that their stomach would let them know when it was full.
But in one experiment, diners giving a 'bottomless bowl' which automatically refilled with soup, ate 73 per cent more than those given normal bowls – and didn't even realise it.
Dr Wansink said: 'The lesson is, don't rely on your stomach to tell you when you're full. It can lie'.
