For more than a year, retired Marine Jim Kuiken spent his days sitting alone in a chair in his living room, barely able to function.
"I would get up out of the chair maybe twice a day to go get food," the highly decorated former Marine Sergeant Major tells PEOPLE. "I would be in my PJs for days at a time. I didn't interact with other people. I didn't even interact with my family. I was in a real bad place."