I weaned myself on the nostalgia equivalent of methadone (less addictive, less obvious, less likely to make you crazy): missing what I had never had.

Sometimes I think about the sly, flickering line that separates being spared from being rejected. Sometimes I think of the ancient gods who demanded that their sacrifices be fearless and without blemish, and I wonder whether, whoever or whatever took Peter and Jamie away, it decided I wasn't good enough.

We think of mortality so little these days... I thought of the stern Victorian determination to keep death in mind, the uncompromising tombstones. Remember, pilgrim, as you pass by, As you are now so once was I: As I am so will you be.

But this is what I know about people getting ready to walk of the edge of their own lives: they want someone to know how they got there. Maybe they want to know that when they dissolve into earth and water, that last fragment will be saved, held in some corner of someone's mind; or maybe all they want is a chance to dump it pulsing and bloody into someone else's hands, so it won't weigh them down on the journey. They want to leave their stories behind. No one in all the world knows that better than I do.

Regardless of the advertising campaigns may tell us, we can't have it all. Sacrifice is not an option, or an anachronism; it's a fact of life. We all cut off our own limbs to burn on some altar. The crucial thing is to choose an altar that's worth it and a limb you can accept losing. To go consenting to the sacrifice.

It's easy to slide into believing you're the hypnotist here, the mirage master, the smart cookie who knows what's real and how all the tricks are done. The fact is you're still just another slack-jawed mark in the audience. No matter how good you are, this world is always going to be better at this game. It's more cunning than you are, it's faster and it's a whole lot more ruthless. All you can do is try to keep up, know your weak spots and never stop expecting the sucker punch.

Don't get discouraged if you're hammering away at a sentence or a paragraph or a chapter, and it keeps coming out wrong. You're allowed to get it wrong, as many times as you need to; you only need to get it right once.