The 33-year-old allrounder said last week has been the most challenging phase for the team but he believed that his side will play with the same aggression as in the past and avenge their 0-4 loss to India last year.
"We've played our best cricket when we are aggressive. That's ever since I've been involved in the Australian cricket team. We are aggressive with bat and ball, especially with the ball as we were during the last Ashes series. That's not going to change because that's when we're at our absolute best," Watson told reporters today.
"We need to make sure we start off well in that series and stay strong to make sure they feel a similar pain as we did over in India," he added.
India had inflicted a 4-0 loss on Australia the last time the teams met in India in February-March 2013. That was in reply to the 4-0 hammering they had received on their last tour Down Under in 2011-12.
"Mentally I'm slowly getting there. Physically, I feel ready to go. There's no doubt that mentally the last couple of days have been the most challenging of my career. After seeing what happened over the last week, trying to process everything that's happened, being there at the SCG when it happened as well, it's been a mentally challenging time but I'll be ready for Tuesday," Watson said.