As one of Australia's most successful male singers, Guy Sebastian has soared to the highest heights during his music career.
But The Voice coach's rise to the top of the Australian music charts wasn't always easy.
In a startling confession on Monday night's episode of the Channel Nine talent show, Guy revealed the dark reality of trying to make it in the biz, admitting he was initially told he wasn't thin enough or good looking enough to be successful.
"I will say to you, I quit my uni degree and I did the same thing, I recorded demos and I went to labels and they told me I was too fat," Guy said as he gave advice to contestant Diana Rouvas.
"They told me I didn't have the look. I was a weird looking dude with an afro, like fair enough!"
But far from letting the memory get him down, Guy went on to use that experience to motivate Diana and advised her to shrug off her critics.
"I think some people will use that rejection as fuel but I think with you… I don't think you should do that," he said.
"I think you should forget it and bury it because I think when you use that fuel, it kind of brings out this block and this wall and this fire that is hard to get through. Forget it!"
Weighing in with her own tough experiences in the industry, fellow coach Kelly Rowland added that she's also faced her fair share of people in the industry who didn't believe in her.
"By the way, I had a label that said I was no longer viable as an artist after some crazy business took place and afterwards I had a number one record in 23 countries," the Destiny's Child songstress confessed.
WATCH: It's been an emotional season of The Voice this year! Relive the heartbreaking moment Guy Sebastian cried. Story continues after video...
As the newest coach this season, Guy has been making his mark by being super open about his emotions and revealing secrets from his past – including spilling details of his secret romance with Delta Goodrem.
He's no stranger to taking the public with him on his life experiences and in 2017 showed off his impressive body transformation.
Guy and his wife Jules enlisted the help of celebrity personal trainers and overhauled their diets – cutting out sugar and bad carbs.
The Choir singer ultimately ended up on the cover of Men's Health and showed off his ripped new rig.