Video: 10 ways to trick yourself into eating less At this time of year many people are now trying to lose weight after the excesses of the festive period, but often their willpower tends to crack. Here psychologist Richard Wiseman offers some simple and often surprising science based tips on how you can help cut the amount of food you eat with a bit of mind trickery. For example, did you know that the amount you eat can depend on the colour of the plates you eat off and that putting a mirror in your kitchen might help you make healthier choices.