And none of it was bitterness, but it's just frustration about my fall from grace'.
After injuring his finger whilst on tour, Matt demanded a prescription for Tramadol, a super strength painkiller - which Ant McPartlin has called "hillbilly crack" - and Matt says he began "eating it for fun".
On whether he ever regretted appearing on X Factor, Cardle said: "People have asked me a lot and I've never said it was a mistake". I would wake up in various parts of my flat, in the toilet, in my bedroom, on the bed, off the bed, in the lounge, and it would always be like, "Oh that's where it ended"'.
Mel C and Matt Cardle perform at the Specsavers Spectacle Wearer of the Year Awards held at the Royal Opera House in London.
"The danger with them is when you mix them with alcohol you forget what you're doing".
"So it was getting to that point for me without knowing it".
The When We Collide singer also admitted how he began taking potentially risky concoctions of valium and alcohol.
Now 34, the singer also admitted that he began taking potentially unsafe concoctions of valium and alcohol, noting: "the first time I did Valium was on a flight to LA and that was it".
The star continued: "Valium and alcohol are lethal together anyway. It's a muscle relaxant and your heart's a muscle".
"Things came to a head when Cardle got into a physical altercation with his drug dealer in 2013, at the Jingle Bell Ball in Belfast".
He tells The Sun that it was his dealer who finally made him see the light after Matt started a fight with him when he refused to sell him any more drugs. '"You're never having any more of them off me",' Cardle recalled the dealer saying; who then contacted the star's brother over his alleged concern. "I came and met him and he just saw the state I was in because I didn't have any and then he went, "No, I'm not going to give them to you".
Matt admitted he struggled to cope not long after his victory on The X Factor.
Currently, Cardle is working hard on his music career and announced a new album four years ago. At the tail-end of 2017 Cardle revealed that Sony had actually resigned him.
The singer is now back with his old label, Sony, and will release his fourth album "Time To Be Alive" in April.
"I'm in an awesome place now, but that doesn't mean I'm always going to stay here".