The 36-year-old Angels singer is poised to release his first album with Take That in 15 years. He admitted that if he hadn't got back with the band he would probably be 'doing nothing'.
Speaking to Popjustice, he said that while he is excited about releasing the album and touring with the band, it might mark the end of his career in music.
He said, 'If it wasn't for the boys, I would probably be doing nothing because I quite enjoy doing nothing now.
'It does feel like the end of one of the last chapters in the book and I do feel a bit spent, to be honest with you. I'm loving what's to come, obviously, and I'm very excited being back with the boys, our album sounds amazing.
'I'm excited to do the tour and all that business. But I'm kind of still at a loose end figuring out what I want to do when I grow up.'