Frank Lampard has warned his Chelsea team-mates their Barclays Premier League title hopes will be determined by attitude.
The Blues maintained the pressure on leaders Arsenal with a hard-fought 4-3 victory at lowly Sunderland on Wednesday night.
For the second time in four days, Jose Mourinho's men had to come from behind to take the points, and England international Lampard knows they will need to show the same kind of resilience at Stoke on Saturday if they are to emerge triumphant.
Asked about his side's developing consistency, the 35-year-old said: "That's it, and let's carry on like that.
"A lot of that, for me, is attitude and focus. We have got the squad, we have got the players, we have to get ourselves up for every game, we have to really, really focus because every game is difficult.
"More than ever, that's true. Coming up to Sunderland, going up to Stoke on Saturday – if we go up there with the wrong attitude, we won't win, so it's up to us."
It was Lampard who dragged Chelsea back into the game at the Stadium of Light after United States international striker Jozy Altidore had fired the hosts ahead with his first league goal for the club after 14 minutes.
The midfielder found himself completely unmarked in front of goal after Eden Hazard had wrong-footed full-back Phil Bardsley three minutes later and had the simplest of tasks to head home his fifth of the season.
Lampard said: "You get a sense with players like Eden when they are going to cut back and feint to cross. I waited for him to feint and then just managed to arrive at the right time.
"He put in on a sixpence, really. If had missed that, then I would have been a bit upset."