Losing my memory and not being able to work.

A receding hairline.

When my father was in his terminal year, I discussed death with him. I recall very clearly his relief that the cancer that was taking him was at least allowing him "all his marbles". Dementia in its varied forms is not like cancer. Dad saw the cancer in his pancreas as an invader. But Alzheimer's is me, unwinding, losing trust in myself, a butt of my own jokes and on bad days capable of playing hunt the slipper by myself and losing. You can't battle it, you can't be a plucky "survivor". It steals you from yourself. And I'm 60; that's supposed to be the new 40.

I was looking at ageing in action, in black-and-white MRI pixels, death and dissolution foretold, and already partly achieved. My 70-year-old brain was shrunken and withered, a worn and sad version of what it once must have been. There were also ominous white spots in the white matter, signs of ischaemic damage, small-vessel disease, known in the trade as white matter hyperintensities – there are various names for them. They looked like some evil pox. Not to put too fine a point on it, my brain is starting to rot. I am starting to rot. It is the writing on the wall, a deadline.

Young, beautiful, deluded.

When I started as a researcher in the BBC, I was working for an editor who was a self-confessed misogynist. He used to practise shooting by aiming his air gun at an aerosol can balanced just over my head. I made it a matter of pride not to flinch as the pellets whizzed by.

Maybe I should have agreed to take the job of controller of BBC One when Bill Cotton offered it to me. I do feel a wimp; I would have been the first woman in the job.What do you consider your greatest achievement? I don’t really claim credit, I hope, for helping to launch Childline and the Silver Line and Silver Stories. It is an achievement that they all exist, but that is down to their amazing teams.

Like intoxication, sometimes followed by a hangover.

To everyone I’ve bored.

Alan Bates, Lord Arbuthnot and Nick Wallis for exposing the Post Office and Fujitsu and, let’s hope, for ensuring everyone is properly compensated.