The 25-year-old has scored seven times for the Blues in just four Premier League matches and has not shown the signs of struggling to settle as other big-money forwards have at Stamford Bridge.
Costa, who cost £32m from Atletico Madrid this summer, told reporters: "It is different for every striker who comes here. Every striker has their way of playing and their strengths and a different team behind them.
"That is very important. If you do not have the team behind you then you can't do things on your own. It all depends on the team. It could be because of that.
"I try to play in the best manner, and hopefully things will continue like this. But there will be a moment when I cannot score - that is football."
Chelsea are currently top of the Premier League with an 100% record after four games of the season.