Walk tall! it is difficult to feel sad if you walk tall. Unhappiness is often reflected in your posture, with drooping shoulders and a shuffling walk. Next time you catch yourself doing this shift to walking briskly and hold yourself erect. Fix your eyes on a point high up, for instance, the rooftops around you, throw your shoulders back and smile. Your mood will begin to shift immediately.

The brain has an area that reflects confidence, but once that area is triggered it doesn’t matter exactly how it’s triggered. It can be difficult to distinguish real confidence from confidence that comes from just standing up straight … these things go both ways just like happiness leads to smiling, but also smiling leads to happiness.

Richard Petty, Ohio State University, ‘The Surprising and Powerful Links Between Posture and Mood’, Fast Company.