"I know it sounds sappy, but it was a waste," the 58-year-old actor tells PEOPLE. "It takes a lot of creative energy to sit on your ass and figure out what you're going to eat next ... I wanted to live life better."
Mission accomplished: The Treme actor has lost more than 100 lbs. thanks to his healthy new lifestyle. He quit drinking three years ago and hired Mackie Shilstone -- a health coach who has trained many athletes including tennis player Serena Williams. Now Goodman has cut sugar from his diet and works out six days a week. "I'm breaking a sweat but I'm not going nuts," he says.