Many people flounder about in life because they do not have a purpose, an objective toward which to work.
I think anytime you can affect people in general, in a positive way, then you're a lucky individual.
I like the idea of the documentary as a portrait. There's not a chronological beginning, middle, and end structure. You build something in the editing room that's shaped by getting to know the person and digging deeper, unpeeling the layers of them as you get to know them.