The 34-year-old, who made a comeback in the national T20 team in January this year, shared a 51-run partnership with Virat Kohli (56 not out).
"Today was one of those days where I felt my flow was back. I needed a bit of a flow out there to feel good. I felt being positive out there when I got a few hits off my bat. I felt that my game is back," Yuvraj told 'BCCI.TV'.
"I was assessing which bowlers I am going to attack and which bowlers I won't. I told myself that if a left-arm spinner is bowling, then I am going to go and attack straight away. Any left-hand batsman who can hit sixes will go after left-arm spin," said Yuvraj.
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Yuvraj, who made a patient 14 in India's five-wicket over Pakistan, stressed on spending time in the middle.
"Last game, it was a different situation where we needed to take a spell out and get a partnership going. I took my time out there where I could leave a lot of balls and get a partnership going along with Virat Kohli. It was a small total so I could take a lot of time," he said.
Yuvraj heaped praise on Kohli, who played his second consecutive match-winning innings in the tournament.
"I feel he has been in the form of his life for the last five to six years. He has been very consistent and he knows his role really well. He is batting beautifully and I hope he continues to do that," he said.
"I want to get better every game. Hopefully, I can continue this good run ahead. I believe it is my responsibility to go and change the game (scenario) for the team. Hopefully, I can do it more than once," he said.