The scoreline at King Power Stadium on Sunday does not tell the full story.
Against a lively Leicester side, Manchester City were still below par and for the first time this season they had less possession than their opponents (46.4%).
It is just the 14th time Guardiola's side have had less possession during his 323-game reign in the Premier League.
"It was not the ideal performance but hopefully the victories will give our mood a better position," Guardiola said.
"We didn't have enough energy to sustain 90 minutes but hopefully in the new year we can bounce back a bit from a bad moment."
The stats also show City are lacking the intensity we have become accustomed to seeing in Guardiola's teams.
Against Leicester, the club won possession in the final third just twice. Last season, City nicked possession in the final third 7.5 times on average per game.
Former Manchester United defender Gary Neville told Sky Sports: "They got the win and the clean sheet but it has been a struggle for them.
"To watch them today it is still unusual, you're not getting carried away."