City is in Champions League action against Olympiacos on Thursday (AEDT), looking to advance to the last 16 with a fourth straight victory.
As well as delivering another result on the European stage, though, Guardiola recognises the match is important to "recover our feelings" after another painful outing in the Premier League.
City went down 2-0 at early leaders Tottenham on Sunday (AEDT) and now lies 13th in the table, already eight points off the pace with a game in hand to play.
A return of 12 points from eight games is City's worst start to a league season since 2008-2009 (10 points), while its failings in attack are particularly concerning, netting just 10 times - a low since scoring six times in eight matches in 2006-2007.
Guardiola is confident his side will turn their fortunes around, though, explaining: "I had a feeling we would do really well this season. I don't know why [we haven't].
"From the beginning, I expected a reaction after how we finished the last season against Lyon in Portugal. I have a good feeling.
"We know what we have to do. We are a team who last season scored a lot and now we are struggling.
"I have to find a solution, to find the right way to attack more fluently and have the feeling that we can score goals. But in the way we play, I'm quite good, quite happy.
"There are little details still we have to improve, conceding penalties that are unnecessary, sometimes we miss clear chances we have to score.
"But the moment will break. In one or two games, this kind of thing will get better. The season is still so young and I'm fully optimistic we're going to do a good season."
Guardiola is also willing to stay patient with record goalscorer Sergio Aguero, who watched on from the bench at Spurs as City had 22 shots without finding the net.
Aguero suffered a knee injury in June and has played just 110 minutes in the league so far this season, attempting a single shot that failed to hit the target.
"We want him to come back," Guardiola said. "Today he trained again. That he can recover a good feeling in his knee is the most important thing.
"I know it is not easy [being] injured but we wait for him and it's a step at a time.
"We still have many, many games this season to play and we will need him. We want him to recover and be back in the best condition."
In the meantime, new signing Ferran Torres has taken on a striking role, still waiting on his first Premier League goal but scoring three times in three matches in the Champions League.
Another goal against Olympiacos would make him just the third City player - after Aguero and Raheem Sterling - to net in four straight games in the competition.
Torres said of his responsibility to the team: "Obviously we have had a few injuries of our strikers in the squad.
"But I think we are scoring goals as a team - probably not as many as we would like but we are also facing difficult opponents as well, so it's difficult.
"We are working hard as a team to sort that out and I am confident that the goals will arrive.
"Playing as a striker is not my natural position but I feel very comfortable playing there. I am also scoring goals so it is good.
"When you work hard and make sacrifices for the team, you get your rewards, so I am trying to work hard to keep scoring goals."
