Learn how to take losses quickly and cleanly. Don’t expect to be right all the time. If you have made a mistake, cut your losses as quickly as possible.

July 11, 2019
When I was quite young, my father and I would go into Boston on Saturday afternoons to see my grandmother. She lived in a brownstone in the south-end across from the Greek Cathedral. As we settled in, she would give me a dollar and ask me to “go down to ‘Sam’s” and get a pound of hamburger for dinner. Sam was the butcher at the end of the...