Wherever you are, make choices. Don’t waste happiness on trivial irritations. So, you have to wait in a queue? Why get yourself worked up? What a great opportunity to escape to a desert island (in your head at least). Imagine the waves lapping, the birds singing and you’ll be in heaven. You have to travel standing on a packed commuter train? Why inveigh against the rail companies? What a great way to develop your balance, exercise your core muscles by pretending you are on the ski slopes or a surf board. Choose how you want to feel.