JESSIE J has revealed that she was reduced to tears every day by a teacher as she pursued her dream of becoming a top singer.
The Voice coach said the experience had made her tough on some of the contestants on the BBC1 show.
The Price Tag singer (24) who is a coach on the programme with veteran singer Tom Jones, Black Eyed Peas star will.i.am, and The Script frontman Danny O'Donoghue, told the Radio Times: "I'm the most critical of the four of us because I've only been in the industry for 12 months and I remember what it takes to make it."
The Brit school graduate added: "I used to have a teacher who made me cry every day.
"She said the reason she was so tough on me was because she knew I had potential, and I've always remembered that."
Meanwhile, fellow Voice judge Tom Jones has admitted that he regrets spending so many years covering up his grey hair.
The 71-year-old surprised fans three years ago when he finally stopped colouring his trademark thick, curly locks.
He said: "To each his own. It's not for me to tell others what to do. But you can't get to a certain age and have black hair. If some can, bless 'em."
The Sex Bomb singer revealed: "Every Christmas I'd take two months off and never dye my hair. And when I started a new tour, I'd look and think, 'It's not white enough, a bit patchy', so I'd dye it again."
Tom said: "Getting older is great. I look forward to birthdays. It's very sad if you moan that 'it's not like the old days'."
Tom said he was sad to have given up his annual stint singing in Las Vegas last year, but that he had been 'flogging a dead horse' for a while now, and was 'taken for granted' because he had been there for such a long time.