Jose Mourinho believes Chelsea are in the midst of a "perfect season" and that even a first defeat of the campaign would not alter the Blues' burgeoning self-belief.
The runaway leaders play Tottenham on Wednesday night seeking to consolidate their advantage at the top of the Barclays Premier League, having failed to score for the first time this term at Sunderland last Saturday.
Despite opening the season with a 20-match unbeaten run, Mourinho thinks his side should be in buoyant mood even when the defeat he believes is inevitable happens.
"What do you want the team to do or to feel when a team is doing a perfect season?" Mourinho said.
"Top of the league in the Premier League. Top of the group in the Champions League. Quarter-finals of the Capital One Cup. Not losing one match for four months.
"The team has to feel very very well. And, when the defeat arrives, I think we have to feel exactly in the same way.
"We are doing things very, very well and it's not a bad result, when the bad result arrives, that is going to change our self-belief, our self-esteem."
For Spurs to end the Blues' unbeaten streak, they must win at Stamford Bridge for the first time since February 1990, when Gary Lineker scored the winning goal.
"So tomorrow he can't," added Mourinho, who is not interested in the record or in appraising Tottenham this season.
"I don't think it's important. I don't even speak with the players about it, was not important.
"I don't have to comment on (Spurs), just a difficult team that we have to play against. That's the only thing that we have to think, that it's a difficult match and to be ready for it. Nothing else."
Chelsea will be without striker Diego Costa, who serves a one-game ban after being shown his fifth yellow card of the season in last Saturday's goalless draw at Sunderland.
Loic Remy or Didier Drogba are likely to start up front in his place.
"We don't speak about Diego," Mourinho said.
"Forget Diego, we trust the other two and we go with the other two."