The Blues have lost three of their opening five Premier League matches, the same number of defeats they accumulated in the entire 2014/15 season, and currently sit down in 17th place in the table.
Chelsea prepare to face Israeli champions Maccabi Tel-Aviv at Stamford Bridge on Wednesday night and Ivanovic is all too aware that the West London side can not afford to continue their current poor run of form.
“We need one big win to come back to our way. We are not playing as badly as the results are showing but we have to wake up,” he told Chelsea TV.
“I think at the moment we are being punished for all our mistakes. The only way we can change is to work hard and be ready for the next game, so it is like a final and we have to play like a final.
“The next game is very important for us. It is a new competition and it is time to change all this situation. I hope we will start winning the games soon.”
The Serbian international has himself been in fairly poor form this term and his current Chelsea contract expires at the end of the season and as such the 31-year-old may well be playing for his future at the club.