Which are worth a lifetime

When my daughter gets a haircut, she comes home sad and angry because she doesn’t like it, that haircut, and then her mom washes it again and fixes it, and she looks at herself in the mirror and smiles, and then, in bed, under the warm covers, shortly after, happy, she tells me, Dad, I love my hair.

What are the things or moments that, for you, are worth a lifetime?