I failed my third year of university three times. Same module each time, my dissertation, which I failed during the year and during the summer repeats, meaning I failed that module six times.
Nailed it on the seventh try though. Had to get special dispensation from the university to enroll again. Worked until Christmas, quit my job then and knuckled down and did it. Got a 1st in it when the results came out. Could have performed a standing backflip there and then I was so happy. Probably just got super drunk instead.