Each has his own way to Success.
My story: 30% effort + 30% failures + 30 lessons from failure + 10% luck
My friend: 60% natural talent + 20% effort + 20% luck
My girlfriend: 80% hardwork + 20% smartwork
My sister: 50% natural talent + 50% hardwork
My neighbor: 100 % luck (reservation system)
( Success is mostly relative and grade driven anyway
or at times success is a roll of a dice and hence a gamble)