Why is it I fancy an early morning snack and am easily persuaded by bulk-buy Mars bars adverts? I know I shouldn't, because I have type 2 diabetes. But I confess I'm really looking forward to the delivery on Sunday, by my speedy Amazon delivery driver [he is very quiet and nearly as fast as Usain Bolt].
What have you been tempted to buy that you know on a practical level is not good for you or your wallet, yet fulfills a psychological need. Where would we be wthout treats? How is it possible to prevent yourself - or should you not even worry about it?