The last thing my father ever said to me was, “If you walk out that door, don’t you dare come back.”

I was nineteen years old, standing in the kitchen of our little house in Cedar Falls, Iowa, with a duffel bag on my shoulder and enough anger in my chest to burn the whole county down.

I believed him. That was my mistake. I believed him for twenty-two years.

My name is Thomas Whitaker, and I want to tell you about the biggest regret of my life, so maybe you won’t make the same one.

My father, Walter, was a hard man. He ran a small hardware store on Main Street for thirty-one years, opened it at six every morning, closed it at six every night, and never once complained about his aching back or his swollen hands.