Oscar has heaped praise on Chelsea boss Antonio Conte for giving him confidence.
Following a disastrous defence to the title last season at the west London club, Chelsea have started the new campaign under Conte on a high, winning all three of their Premier League matches including the 3-0 win over Burnley before the international break.
However, speaking ahead of their clash against Swansea City on Sunday, Brazil midfield ace Oscar expressed his delight with Conte's method as he hopes they win trophies this season.
"[Conte] is giving me a lot of confidence and I'm doing very well," Oscar said. "Hopefully I can continue to do so.
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"In the last few seasons I have played as a 10 or as a winger. Now I'm going back to my original position of number eight, attacking and defending from box to box, which is my original role and the one I like the most.
"It's been a very successful time for me here at Chelsea. I won a lot in the last few seasons - the Premier League, League Cup and the Europa League.
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"Only last season wasn't great, not only individually, but as a team. Hopefully this season we will win trophies and get back to a winning mentality.
"The objective is not only to finish in the top four, but to fight for the league, FA Cup and League Cup because we have to win trophies."