The winger admits he had become too "shy amongst the senior boys" and started playing "safe" which resulted in him losing the fearlessness that saw him burst onto the Premier League scene last season.
Sterling turned to his agent, Aidy Ward, to help him get over his apprehension.
"He's knows me as well as anyone else; he knows my game," Sterling told the Daily Express. "He asked the club for a couple of DVDs from last season when I'd played well.
"He wanted to show me the difference. Last season, I'd have beaten a man in two touches and raced away. Suddenly, I was going safe; passing to someone else.
"I didn't realise I was doing it. I needed to be more confident. You have to respect the senior players around you but you have to stamp your own mark on the game.
"I realised I need to stop being shy amongst the senior boys. The best way of proving yourself is on the pitch. I had to be more confident. I wasn't confident enough to have a shot myself and instead I'd pass it to someone like [Luis] Suarez.
"I just said to myself that I had to step up and start running at defenders again; taking responsibility. I've also had the chance to do that week in, week out. I can feel a bit of momentum now."
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