Life has certain givens. Everything changes and ends. Things do not always go according to our plans. Life is not always fair. You learn this sort of thing as you get older. Just as you discover late in the piece useful things like how it's always stylish to dress like a wealthy recluse or how to really have hot sex. Also no one cares if you make fiddly canapes or if you were once a Rhodes Scholar.
Only of late - I am 47 - have I discovered that I am actually not scared of ageing any more. Unlike, ironically, my colleague Verity Johnson, who is dancing in a cage because she is petrified of losing her sexual juju. She is about 20. Verity, who is a total babe, says we link youth to power in a way that makes anyone over 30 feel as relevant as a VCR.
Verity worries she will soon be "past it", although she has also said in her column many times how much she admires older women. I am now laughing a haggard, wrinkly, cynical wheeze like only a 47-year-old crone can. But lady, listen to me, because I've got on my condescending old- person chintzy cup-of-tea voice.
Your juju is not going to be over, even when you are 80. I not only am learning to love getting old myself, but I am learning to deeply love and respect the people who are known as the "super-old". (That's what the insurance industry call people who have got through the health danger zone and are now going to go on like Energiser bunnies for decades and wear t-shirts that say Rock 'n' roll Motherf*****.) See petal, there is hope!