"The last 10-12 months I have been more focused on Test cricket. I came to terms with the fact that Test cricket is no Child's Play. I wanted to be serious about every aspect of the game and be as focused as possible," Ashwin said at the post series media conference.
Ashwin got 21 wickets in the series and the icing on the cake was a half-century in the Indian second innings yesterday.
On the final day's proceedings, Ashwin conceded that they had to play the waiting game for a certain period of time when Kusal Perera and Angelo Mathews added 145 runs for the fifth wicket.
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"Even before the game, we had identified this as the phase where runs would go. We were always stacking it up for the second new ball to come, so we were really prepared to take the game as deep as possible and that's what Test cricket is all about. I think we as a unit stuck to it pretty well," he added.
"I have to be very thankful to the team management and the coaches. I have been struggling with a tennis elbow issue and I had to make certain technical adjustments to my batting.
"It has taken a bit of time. I wanted to contribute but unfortunately I couldn't spend more time in the middle. Yesterday, was one day where the game situation demanded me to put everything behind and watch the ball closely.
"Thankfully, it came off really well and I struck the ball really well," he said.