It is something that happens to most of us every day. You are up to your eyeballs in work/childcare/social commitments and someone asks you to do that little something that promises to be the proverbial last straw that broke the camel's back. 'No!' you think. But what do you hear coming out of your mouth? 'Yes, that's great, I'd love to do that.' Why? How on earth? Do not fret. Help is at hand.