In the movie Zero Dark Thirty there is a scene where the commander who is frustrated as the progress of his team says, "...there is no one else." He wants to motivate them, because no one else can do the work they can do. I have thought about this since Africa, in respect to charity, my engineering, and running. There is no one else who will do what I can do. Maybe there is, but it would probably take that person or persons longer, simply because I already have proximity to the challenges.
You can come up with excuses not to give to charity, not to be an artist at your day job, and not to exercise but if you don't do those things, no one will. The idea in your head, that seems good, although too crazy to tell others, will not magically be done. You must do it.