Sir Tom's partner of 59 years Linda tragically passed away from cancer in April this year.
Understandably, Sir Tom says it's been difficult to move on but working on The Voice UK has helped him to feel better.
"I didn’t know whether I’d be able to sing again or not. It was devastating," Sir Tom reflected this week.
He candidly admitted: “I’ve got back on the stage. That first step was a big one. Now I realise music is saving my life.
“It’s even more important to me than before — I’m reading more into lyrics of songs now."
Speaking to The Sun newspaper, Sir Tom added: "The busier I am, the better I feel. The Voice is definitely part of that.”
Sir Tom was a coach on the BBC series but axed last year, according to him, without reason.
However he's now back on the show as it moves to ITV alongside fellow former BBC coach Will.i.am and two new faces: American singer Jennifer Hudson and British rocker Gavin Rossdale, lead singer of Bush.
Sir Tom said last month on his return: “I’m looking forward to returning to my big red chair on The Voice UK.
"I had some great times on the show and I can’t wait to again discover and help some brand new talent. And of course be back with my pal will.i.am.”
The Voice UK is back on TV on ITV from 2017.