The manager feels that it has underpinned their title successes of the past two seasons.
He said: "In some moments you need luck to win games, to make a lot of points, win titles.
"But we have effort and very good things, so I'm proud of the the effort and the way we have done it.
"Our first season (at City) was not consistent. We had problems. I didn't expect it when I landed here. I thought at home we would be strong and away tough but it was completely the opposite in the first season.
"But since then, the second season and third season and this season as well, we have been strong at home. To try to win titles you have to be strong at home or you have no chance."