"Sibling rivalry" isn't quite right

I spent the weekend with my brother and his family, which (as always) got me thinking about our different life trajectories. Both of my brothers and I are pursuing creative lives to some extent; my older brother, who was the most creatively disciplined of us all in our youth, has yet to break into any of the creative profession fields; my younger brother, who initially didn’t seem to have any plan at all, is a wealthy Hollywood screenwriter, and is clearly the most accomplished of the t...