The most important lesson I’m learning in business (thanks, running)

I choked when I challenged my thirteen-year-old son Valentin to a one-mile run.

I’m not an athlete but have run consistently in the last fifteen years. I’m sure that at my age — forty years old — my running stats are in the top percentile for my age group.

My kids are competitive athletes. They play tennis and my oldest son Maxim (Max), a high-schooler, is a running fanatic. His routine consists of stretching, long runs, slow runs, tempo runs, interval training, and even strength training…