We commonly use the term “burnout” to describe the state of exhaustion suffered by the likes of Steve. It occurs when we find ourselves taken over by this internal protest against all the demands assailing us from within and without, when the momentary resistance to picking up a glass becomes an ongoing state of mind. Burnout didn’t become a recognised diagnosis until 1974, when the German-American psychologist Herbert Freudenberger applied the term to the increasing number of cases he encountered of “physical or mental collapse caused by overwork or stress”. The relationship to stress and anxiety is crucial, for it distinguishes burnout from simple exhaustion. Run a marathon, paint your living room, catalogue your collection of tea caddies, and the tiredness you experience will be infused with a deep satisfaction and faintly haloed in smugness – feelings that confirm you’ve discharged your duty to the world for at least the remainder of the day.