We’re all born with fairly open faces, but by the time we’re 30 or 40, that face may have turned into a character mask that reflects our default mood.

Exercise. For 20 minutes, go about your normal day with a permanent frown. Notice how you feel and how other people interact with you. What’s happened to your normal rapport? Are you tending to get what you want from people? And are you starting to feel in a bad mood?

Exercise. For 20 minutes, go about your normal day with a permanent, light smile. Notice how you feel and how others interact with you. Do you tend to attract people more? Are you more likely to get what you ask for? And do you now find yourself in a good mood?

Our outward expression affects our inner life – our thoughts, feelings and moods. And it’s also the main signal people read in order to work out what’s going on inside you. That’s important for you as an actor because it helps you to find truth, whether you work from the inside out (feelings dictate physicality) or from the outside in (physicality influences feelings).

It’s also important for you in everyday life. For instance, if you habitually adopt a confident posture, you will habitually feel more confident. The good news is that you can choose. Try it at your next audition.