Boris Johnson’s promotion to Prime Minister of the UK has got me thinking. He is the epitome of an extrovert. Extroverts are articulate, get noticed, and they are the life and soul of the party. Donald Trump is an extrovert. Bill Clinton is an extrovert. In fact, it is estimated that between half and three quarters of the population is extroverted. And the opposite of being extroverted is introverted. It is funny how we are supposed to be one or the other. I would have though