Sharma stressed that if they will focus on the present that will help them more than anything.
"I think if we focus on the present that will help us more than anything else and I think right now that is our focus to win games and try to stay in present and see what are the mistakes we are making. So that when we come out and play every fresh game, we look like a different side," he said.
India won the first T20I by six wickets but suffered an eight-wicket defeat in the second T20I against West Indies.
Sharma admitted that India made some mistakes in the second T20I and want to tighten up on those areas.
"In the last game, yes we made some mistakes on the field whether it was with the bat, ball and also on the field. So, we know where we lacked as a team and we just need to tighten up on those areas and make sure those mistakes are not repeated again," Sharma said.
The series-decider between India and West Indies will be played on December 11.
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