I'd never written nonfiction about the war on drugs, but I know a tremendous amount about it: I taught a class on it for seven years. I was putting into words the stuff I was teaching, and I was writing it up and thought, "Dude, you're writing a book."

I was born in Israel, to Canadian parents. My father immigrated in 1948, part of a wave of young men and women who came as pioneers, to fight for a Jewish homeland. Their motive was in large part a reaction to the Holocaust, and their slogan was 'Never Again.'

It's hard to separate your remembered childhood and its emotional legacy from the childhoods that are being lived out in your house, by your children. If you're lucky, your kids will help you make that distinction.

I believe that mothers should tell the truth, even - no, especially - when the truth is difficult. It's always easier, and in the short term can even feel right, to pretend everything is okay, and to encourage your children to do the same. But concealment leads to shame, and of all hurts shame is the most painful.

My own husband was divorced when we met, but without kids. I don't know what I would have done if he'd had them. I got the message very early on that the worst mistake a woman can make is marrying a man with children.

One of the darkest, deepest shames so many of us mothers feel nowadays is our fear that we are Bad Mothers, that we are failing our children and falling far short of our own ideals.

As a novelist, I mined my history, my family and my memory, but in a very specific way. Writing fiction, I never made use of experiences immediately as they happened. I needed to let things fester in my memory, mature and transmogrify into something meaningful.