It seems that one approach to being "successful" as a photographer / artist is to pick one thing and do it over and over again until you get known as the photographer / artist who takes underwater portraits on Polaroid - or whatever. It's never been my approach as a musician, having played with varying levels of competence piano, guitar, trumpet, accordion and electronics - a "Jack of all trades", and that suits me fine. And yet with photography I can feel the pull of that narrow conservative path of specialising, to be a success. But most of my work is focused on process as much as an outcome. And that, ultimately is what interests me. I shall return to this.
Meanwhile I might consider "polymath" - or maybe even the Renaissance man!