To help disambiguate confidence vs arrogance:
(for those who know a bit about football)
Mourinho, that is a confident man (not arrogant)
Hamilton, that is an arrogant man, sorry, arrogant child (not confident)
Arrogant: Having or revealing an exaggerated sense of one’s own importance or abilities (repeatadly comparing himself to Ayrton Senna)
Confident: 1. Feeling or showing confidence in oneself; self-assured.
2. Feeling or showing certainty about something.
(mourinho stating for sure he’s gonna be champion for Chelsea before mid-season or for FC Porto pre-season)
But one doesn’t have to go to football to see the diference: Alonso, after a dismal race in silverstone showed supreme confidence (not arrogance) stating We will be champions (they weren’t but they were damn close, just look at the predictions before Abu D.)