Guardiola has warned Bournemouth he is far from satisfied with City's exhilarating start to the season.
Guardiola said: "After (a game) for half an hour, one hour, sometimes three or four hours we are so happy - but after that you start to think again about the next one, you start to worry about the strikers of Bournemouth and how they play.
"I saw their game against West Ham and they were unlucky and they played really, really well against United in the first 30 minutes. They were perfect on the pitch.
"I'm not thinking about what we did in the past, our four games in the Premier League, our three games in the Champions League. I'm thinking about what's going to happen tomorrow - what I have to tell, what I have to do, what do I have to train for them to be ready for our game.
"The Premier League is so difficult because you play so many complicated games. Any team can beat you and I have felt that. Tomorrow I am going to feel that."