If we look out at the myriad of problems we face everywhere today, the odds seems insurmountable. I think what makes David Heaf's work so admirable is how niche specific it is. The American humorist Josh Billings once penned, "Be like a postage stamp. Stick to one thing until you get there." I think David is well on his way there.
I haven't discovered what my niche is yet, but I respect great thinkers like David Heaf who have, and once they do, they go after it with full focus, passion and pursuit. I think this is good template to follow, if we're to stay focused and make any real strides at all.