As we write, so we build: to keep a record of what matters to us.

Status Anxiety: A worry, so pernicious as to be capable of ruining extended stretches of our lives, that we are in danger of failing to conform to the ideals of success laid down by our society and that we may as a result be stripped of dignity and respect; a worry that we are currently occupying too modest a rung or are about to fall to a lower one.

I learnt to stop fantasising about the perfect job or the perfect relationship because that can actually be an excuse for not living.

I was foreign and Jewish, with a funny name, and was very small and hated sport, a real problem at an English prep school. So the way to get round it was to become the school joker, which I did quite effectively - I was always fooling around to make the people who would otherwise dump me in the loo laugh.

If optimism is important, it's because many outcomes are determined by how much of it we bring to the task. It is an important ingredient of success. This flies in the face of the elite view that talent is the primary requirement of a good life, but in many cases the difference between success and failure is determined by nothing more than our sense of what is possible and the energy we can muster to convince others of our due. We might be doomed not by a lack of skill, but by an absence of hope!

Maturity: the confidence to have no opinions on many things.

The materialistic view of happiness of our age starkly revealed in our understanding of the word "luxury.