Liam Payne says his time as a "reclusive pop star" in One Direction "would have killed" him if he didn't get out.
The 'Story of My Life' hitmakers split three years ago, and the 26-year-old singer - who admitted the band were "overworked" - revealed he lost track of his interests outside of that world.
Speaking on Jessie Ware's 'Table Manners' podcast, he said: "We were definitely overworked. I had no personal life, I learnt nothing about myself.
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"I remember getting to therapy and the guy was like, 'What do you like to do?' I haven't got a clue.