Are you weary of “new year, new you” positive thinking exercises? Tired of trying to feel Tiggerish in the cold, dark, midwinter mornings? Why not try this quick experiment to redress the balance. All you have to do is imagine that something great has happened in your life: maybe you’ve run into an old friend; perhaps you’ve been promoted at work; or you’re about to head off on holiday. Now ask yourself what could go wrong. In what awful ways could it all fall apart? What disastrous chain of events might unfold? Don’t think solutions, think problems. Open the worry floodgates and allow yourself to be swept away.As you’re likely to discover when