He said: "We have to bounce back. It hurt at the end of the Palace game because we knew how vital three points would be. For us to not get them is very damaging.
"If I'm totally honest probably, yes [Chelsea's title challenge is over], that's certainly how I felt at the end of the game.
"Mentally we have to be right. We have to be ruthless, go to places like Selhurst Park and do a job. We knew it was going to be difficult but we have to get the job done. Unfortunately we didn't do that.
"It's massively disappointing, the feeling at the end of the game was horrible but all we can do is keep pushing and try to win our games."