N'Golo Kante criticised Chelsea's game management after they slipped to a last-gasp defeat at Wolves.
Pedro Neto's injury-time winner condemned Frank Lampard's side to a 2-1 loss at Molineux on Tuesday.
Victory would have taken them top of the Premier League but Chelsea slipped to a second straight defeat after a 1-0 reverse at Everton on Saturday.
"We want to win so much that we work so hard. We were down one goal but the mentality of this team is to continue and to get the three points and we are very happy.
"We've worked hard since day one, we've worked hard since the last loss because we want to get three points in this game."
Neto also had a late penalty overturned after Stuart Attwell reversed his decision when the forward went down under Reece James' challenge.
"I will be honest, for me, even the ref, he heard the touch but it was his decision," he told the club's official site.
"We can't do anything about that, we only want to work on what we control, so we passed the penalty, we got the victory, and that's what is important this time."