Kirsty Young's castaway this week is Paul McKenna. He is Britain's best known hypnotist and made his name on prime-time TV. Millions used to watch on Saturday nights as he mesmerised ordinary people into doing extraordinary things. But he has found an even larger audience - and riches to match - through his series of self-help books. With titles like I Can Make You Thin and Change Your Life in Seven Days he taps into the angst-ridden preoccupations of our age with promises of serenity, contentment and control.

He is, he says, an example of his own success - having been a geeky, unconfident child who was bullied at school he has now taught himself to abandon those self-doubts. Human beings are like computers, he says, and sometimes need to be reprogrammed so they function better.

[Taken from the original programme material for this archive edition of Desert Island Discs]

Favourite track: Movin' On Up by Primal Scream