That is a question that requires some context.
There are a number of people from whom I take orders--I work in government, which is a hierarchical institution, after all. So most assuredly the Queen, the Governor-General, the Prime Minister, the Minister, the Deputy Minister, my ADM, my DG and my Director are all, within that context, my leaders. But that leadership is confined to my employment.
Professionally I am a member of two professional bodies whose rules I am obliged to follow in order to maintain my professional standing. So the Board of the CPSBC and the Benchers of the LSBC are my leaders in that sense.
My personal pursuits often involve leadership--voluntary service within organizations of people coming together for a common purpose. Sometimes I take on leadership roles within these organizations, other times I am a follower.
But if we take this up to a higher level, the context changes again.
If the question is, "who leads my thinking?" then the question is much more diffuse. The simple answer, "no one, I think for myself," is both superficially true, and profoundly false. My thinking is, indeed, my own, but I would be foolish to pretend that my thinking had not been influenced by my family, my friends, my teachers, and the people whose work I admire.
The list of these people is astoundingly long. I think it's too trite to dismiss, "those whom I respect, admire or like." The fact that I respect, admire or like a person is very likely to mean that the person will have had an effect on the way that I view the world and the way that I think about things. So in that sense, I am their follower--and in the same sense, I may well be their leader.
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--James