The cafe where I buy my lunchtime salad also sells a range of excellent cakes, which are very tempting. I've learned to tell myself that I only need to exercise

The cafe where I buy my lunchtime salad also sells a range of excellent cakes, which are very tempting. I've learned to tell myself that I only need to exercise self-control (and not buy a cake) while I'm in the queue to be served. It sounds obvious, but consciously reminding myself that the situation I'm trying to avoid is time-limited is a great help.