Let’s not forget charismatic (but ultimately unsympathetic) leaders like Castro and the Che. They were by any measure charismatic. They leveraged that to further their visions to an end.

But, not all charismatic people use their charisma for the bad. Some use it to form friendships and to climb social ladders, some to be productive in their role (salespeople), etc.

For some people it comes naturally. For some it’s forced (practiced). Not sure which ones do better, though intuitively I’d say the naturals would come across better.