He said, facetiously

"I'd wake up and there'd be nothing. I hardly said a word to my wife, until I said "yes" to a divorce. When I was here, I wanted to be there; when I was there, all I could think of was getting back into the jungle. I'm here a week now... waiting for a mission... getting softer. Every minute I stay in this room, I get weaker, and every minute Charlie squats in the bush, he gets stronger. Each time I looked around the walls moved in a little tighter."