I should add that I did smoke cigarettes, quite a lot, between 1987 and 1992. That was when we could smoke everywhere, so it was easy to smoke as much as 50 cigarettes in a day.

As someone with an undiagnosed anxiety disorder, I think smoking helped me to have something to do with my hands. As a child I would fidget, but back then that's not acceptable as an adult - smoking was.

I think there was something in cigarettes that had antidepressant properties for me. My first major bipolar depressive crash came within a year of quitting smoking.

I'd never take up smoking again, it's been almost 30 years since I quit, and I do now have asthma. But despite how much the smell of second hand smoke grosses me out, I do miss smoking sometimes - it was so relaxing.