Mazzarri is happy that he achieved what he set out to at Vicarage Road by keeping the club in the Premier League, but says that things could have turned out much differently had it not been for injuries.
"We had some problems but we achieved our target of safety and beat Arsenal, Manchester United and Everton," he told reporters. "Unfortunately, when all was going well and we were in seventh place in the table, we had this incredible glut of injuries.
"Watford do not have the same ambitions, the same mentality as the other clubs I have worked with. I tried to instil a winning mentality here but that was not possible."