The 34-year-cricketer quit Tests last year after losing his battle against a spate of injuries that plagued his career, and has not featured in a one-day international since September.
“One morning I woke up in Dharamsala, waking up to the beautiful view and I don’t know what it was exactly but I knew now was the right time,” Watson told reporters in Mohali where Australia take on Pakistan in their next Super 10 match on Friday.
“I’ve really enjoyed my time being back in the Australian squad. But it is quite different, none of the other guys I played with growing up are here any more,” he added.
Making his debut in 2002, Watson played along side the likes of Ponting, Glenn McGrath, Shane Warne and Adam Gilchrist and also helped to rebuild the side after his seniors quit the game.
He was part of Australia’s 2007 and 2015 World Cup winning teams.