My experience suggests that most managers are probably very good at looking after things but not very good at looking after people
Even worse, most managers are poor at motivating people.
Because they treat them as things or objects to be arranged or scheduled or ordered or categorized or anything but led.
And therein lies the heart of the problem:
I believe that a Leader needs only three qualifications:
a clearly stated destination or objective
awareness (amongst followers) that the destination is worth reaching
a clear likelihood of reaching the destination
The third element is crucial - it is clearly not enough just to say "come with me to the Promised Land" if the prospective followers do not believe that the would-be leader has any chance of getting there or if they believe the destination will not be worth reaching.
The reality of the third Leadership issue is that the would-be leader must be charismatic. I suggest that Charisma is the single most important quality of a Leader. Think of the following Leaders and mentally review their undoubted charismatic appeal (try not to be put off because you disagree with their objective - this does not make them less of a Leader):