Bodyguard Jamie had originally auditioned for the ITV series back in 2011, and made it through to bootcamp.
However the muscly performer was cut at the judges' houses stage, a rejection that saw Jamie come close to depression.
He claimed: "It’s quite unceremonious when you’re dropped – there is no aftercare or people to make sure you’re mentally OK.
“It brings you down and depresses you, and makes you feel like a failure.”
Jamie, who joined Sir Tom Jones' team on last night's blind audition episode, said: "I have been treated better by the BBC. It has changed my mental state and my insecurities. It’s been very positive.
“I came out of The X Factor feeling low and questioning if I should carry on."
He continued: “The first thing I did when I got kicked out was get a McDonald’s. I ate and drank a lot for the next four months to try and forget about feeling like a failure.
“It felt like the whole experience had been a big waste of two months of my life.
“But the difference with The Voice is that you have a vocal coach there who gives you constructive criticism even if they don’t put you through.
“So people don’t go away feeling they haven’t succeeded.”
Browse pictures of the latest batch of successful Voice acts below...