Comedy and tragedy are two sides of the same coin. A talent in one area might also lead to a predisposition in the other.
I tend not to trust people who live in very tidy houses. I know that on the surface there is nothing wrong with a person being well-ordered and disciplined. Nothing, except that it leaves the impression of that person having lived in the confines of a stark institution which, although he or she has long since left, remains within.
I have had issues with depression all my life, and it's probably true to say there was a tendency towards it even when I was very young, during my schooldays. There was often - and this is quite common with comics - a sense of not feeling as if I belonged anywhere.
In particular, I found praying very disturbing, like swimming with bricks tied to your feet. And yet I was drawn to it constantly.
The good thing about 'Have I Got News For You' is it's a compact show but it still gives everyone space to breathe, and everyone always gets a chance to say something if they want to. It's a very difficult show to dominate, and guests who come on and dominate always fall foul.
I tried to be as thorough as I can, but there is a responsibility that we all have, especially with something like AA which is dependant on anonymity. Once you start banging on about it the whole time, you are potentially damaging the whole concept of it.
I had a longing for ritual, something I could cling to, a routine to make me feel well and contented. I hoped that reading Bible commentaries and theological critiques would nudge me closer to some kind of absolute that I could hold up as a torch to light my way.
If I've inadvertently become some sort of role model for failed comedians, then it's really backfired very badly on me.
The book is called 'Thanks for Nothing' and it's really the story of how I got into comedy and traces back every strand in my life that is relevant to that story. It's kind of an autobiography but isn't, as it stops about 25 years ago. It goes right up to the first time I do stand up.
It's something that has informed quite a lot of my comedy - that idea of someone who is always trying to get in there with the right crowd, always trying to be a certain type of person and never managing it.
The jokes are great but what really matters for a comedian is his performance, his whole attitude, and the laughs that he gets between the jokes rather than on top of the jokes.