The batsman was named Man of the Match for his second Test hundred in the first innings of the match.
Focus now shifts on the third Test to be played here as well, at the SSC ground, where India will be looking to win a series in Sri Lanka after two decades.
"We had a very positive frame of mind to forget what happened in the first Test and bounce back like this. We are going to draw a lot of confidence from this game and go on to the next game with a more positive and clear mind. We will look to win the series," Rahul said.
"We just had a batting plan to be positive and go out there to attack the bowlers and look for runs. We are all positive players and want to take on the bowlers. We like to keep getting runs so that was our plan and it worked out beautifully for us in this game."
India's first-choice wicket keeper Wriddhiman Saha was injured while batting on day four, and Rahul then donned the gloves for the second innings. Naman Ojha has been named the replacement for the third Test even as Rahul did a fine job on days four and five.
"Then today, on the first ball of the day, taking a catch like that, Angelo Mathews was an important wicket for us. He has been batting well and he was a key wicket for us. So getting him out was nice and it set up the mood for us," said Rahul.
