But a draw or defeat would, almost certainly, hand the crown to reigning champions Manchester United who travel to Stoke needing to win to stand any chance of retaining their title.
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"We have to maintain the same confidence in our play, the same determination, because nothing is decided. We have to pay a lot of attention. There are no more games. If we miss our chance now, there is no chance to recover.
"We are in a very good situation. We wanted to arrive at the end of the season with more points. We have one more, but we can decide our own destiny at our home ground, Stamford Bridge, and that is a good thing."
Ancelotti is impressed with the manner in which his players have overcome setbacks during the campaign to haul themselves into pole position for a title triumph.
"This season, we had some problems but every team has a problem during the season. The most important thing is that, when the problems came, we were able to move on quickly.
"This season, really I didn't have strong problems to resolve. We had some difficulties, lost some games, and had difficult moments after the Manchester City and Inter defeats, but we moved on very quickly.
There is also the unresolved matter of new contracts for Michael Ballack, Nicolas Anelka and Joe Cole but Ancelotti insists there is no problem with any of the players.
"Joe Cole will stay here," he declared. "In January I said that no one would come in, and nobody came in.
"So I think that Joe will stay. We have 10 days to wait because the club will speak with Joe Cole, and the other players that are going to be at the end of their contracts, after the FA Cup final."