A partner at plaintiff personal-injury firm Steinberg, Goodman & Kalish, Bradley David Steinberg was not yet 50 years old in 1980. He was working 50 to 60 cases per year, taking 15 to 20 to trial. He was earning enough money to raise four children and travel liberally. But he couldn’t sleep. “I was dying and I knew it,” the now 81-year-old Steinberg said. “I was so … successful that I didn’t have time to breathe.” His burning bush came one summer afternoon in Daley …