While these statements may feel a little arbitrary at first, they’ve been developed from an existing scale used to measure wellbeing across the world – and incorporate key psychological concepts such as self-acceptance, life purpose and environmental mastery.

In short, these statements describe the key qualities that make us feel good – and as such, can help us to identify the areas of our lives we might want to work on.

Indeed, as the psychologist and author Susan Krauss Whitbourne writes in Psychology Today: “Rather than spend your energy sifting through all the many potential ways you could improve your wellbeing, start with these four and see whether the positive energy starts spreading elsewhere.”

Mental health: the 4 key factors that shape our wellbeing, according to psychologists