This season, the weight loss reality show on NBC has been dubbed "The Biggest Loser: No Excuses," where participants must overcome all the reasons or 'excuses' that they say caused them to become overweight in the first place. In this week's challenge, participants were sent home for 18 days where they could all earn immunity if the lost 5 percent of their body weight during their time away. For Chism, that meant a 12 pound weight loss.

"I knew I had some struggles at home but didn't expect to miss my goal. Seeing that 11 pounds, and missing by just one pound was devastating," he explained.

But he wasn't the only one who missed that 5 percent weight loss goal. His father, Mark, who happens to be on the opposing red team, and his teammate Kim Nielsen also missed the required goal. But both were saved due to the fact that the black team's overall percentage of weight loss fell below the accumulated percentage of weight loss of the red team. As devastating as it was to be leaving the ranch, Chism said he learned a lot during the nine weeks he was there.

"I expected it to be all 'Yay, I'm on TV' or 'This is going to be hard but I'm going to lose weight quickly,' but it was 20 percent physical, and the rest was all mental for me," he said. "We all really love each other and want to help each other, but we all are going through our own individual thing. I think I cried more in the time I was on the show than I have in my entire life."

Now back in Texas, Chism has a trainer and has been hitting the gym regularly to increase his chances of becoming the winner of the Biggest Loser at Home prize.

"I believe if I can lose as much weight as I've lost, anything is possible now."

NBC's 'The Biggest Loser' airs Tuesday nights at 8 p.m.