Barbara Kingsolver (Animal, Vegetable, Miracle, Flight Behavior, among many others) does a wide-ranging interview in Sun Magazine touching on writing, climate change, food, and more. The interviewer asks about perseverance:

How do you nurture people to work hard enough to move all that dirt? How do you do that with your own children?

And all of a sudden there’s this: “There’s something I have said so often to my children that now they chant it back to me: ‘You can do hard things.’ ”

“I sent my kids to a Montessori preschool, and thank heavens I did, because most of what I learned about parenting came from those wonderful Montessori teachers. They straightened me out about self-esteem. There’s this myth that self-esteem comes from making everything easy for your children and making sure they never fail. If they never encounter hardship or conflict, the logic goes, they’ll never feel bad about themselves. Well, that’s ridiculous. That’s not even a human life.”

“Kids learn self-esteem from mastering difficult tasks. It’s as simple as that. The Montessori teachers told me to put my two year-old on a stool and give her the bread, give her the peanut butter, give her the knife — a blunt knife — and let her make that sandwich and get peanut butter all over the place, because when she’s done, she’ll feel like a million bucks.”

“I thought that was brilliant. Raising children became mostly a matter of enabling them and standing back and watching. When a task was difficult, that’s when I would tell them, ‘You can do hard things.’ “

“Both of them have told me they still say to themselves, ‘I can do hard things.’ It helps them feel good about who they are, not just after they’ve finished, but while they’re engaged in the process.