And I did wonder - because it's now three years ago since I left prison - whether there would come a time when I would forget it, or it would be in the past as anything else might be - no, it's there every day of my life.
But I certainly made mistakes, for which I regret, I think most human beings in their lifetime make mistakes, mine ended up in two years prison - two very remarkable years from which I learnt a lot.
I feel I have had a very interesting life, but I am rather hoping there is still more to come. I still haven't captained the England cricket team, or sung at Carnegie Hall!
I learnt a lot about myself, I learnt a lot about other people and the problems they have. If I was lucky enough to live to a hundred, how I will feel about two per cent of my life being that way, I don't know.
I spent my first three weeks there on a wing with 21 murderers. I met some very evil people there but also some men who'd had no upbringing, no chance in life.
I think when you've lost an election by 179, there's going to be a period of time after eighteen years in government when you can't do anything right, and people just kick you for the sake of it, will never admit they voted Conservative.
I've been doing nineteen hours a day on London, nothing else, I mean this has been my whole life, and writing has been put on one side, and if I'm privileged enough to be the Mayor of this city, then I will not write again.