Then the first time you lose one, you think you're never going to win another ever again. He isn't known to hang around at clubs after spending four years at Barcelona and only three at Bayern Munich.
The City manager gave his players three days off following their win over Tottenham on Saturday, with the squad due back at the club's training ground on Wednesday.
"I think we share one thing - he's been able to transfer to the team that hunger and desire to never be satisfied".
Manchester City has followed its historic spend on team building with an epochal performance on the field.
"Attackers are individuals and defensive players feel more part of a team".
While few doubt Guardiola is capable of continuing his revolution at City, it is questionable whether his approach will have a broader influence on tactics and coaching across the Premier League.
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And he chose to take Halliday off, sparking an angry reaction from the midfielder. "We were not worthy of getting anything from the game today".
City put themselves in position to win the league by bouncing back from a bitterly disappointing week to ease past Tottenham Hotspur 3-1 at Wembley on Saturday to remind everyone why they have been the best side in the country by a distance this season. City are now on 87 points from 33 games.
Shaw writes: "Everyone has their own definition of what constitutes the "best" Premier League team in history but winning with style is only half the battle".
It sets that team apart and Liverpool went close in 1977, winning the league and the European Cup but losing unluckily in the FA Cup final against United. But expect one thing: statistics like scoring almost three goals per game, having almost 90 percent passing accuracy and averaging 72.7 percent possession are likely to continue.
He dislikes media conferences as it is, but being continually asked about his City future - which will no doubt be the case until he makes his mind up - will hardly make them more appealing.
How to City compare with other great sides?We're all delighted, but there's a lot more to do to unlock our full potential.
City fans will be hoping that Guardiola doesn't fancy stopping at anytime soon or that Jose Mourinho does what he did at Real and find a way to stop his adversary.