From unfit for work to selling quarter of a million books - How did that happen?

Over the last two years, readers have downloaded over 244,000 copies of my eBooks. The last time I was in paid employment was the year 2000, over thirteen years ago. I suffer from bipolar disorder, not your garden variety but a type known as rapid cycling. This means that debilitating mood swings snap on and off, seemingly at random and sometimes many times throughout the day. For a number of years I thought I'd never work again.

So what's changed?

For a start, I haven't been idle for the last...