Read this Peter, it is on a topic I think you will find interesting: why are all geniuses young when they do their amazing work.
that article just made my day.
i particularly like a quote by ben fountain, the author who was a "young" bloomer in his late forties:
But there were other things I didn't really need to know. I met a fellow who was with Save the Children, and he was on the Central Plateau, which takes about twelve hours to get to on a bus, and I had no reason to go there. But I went up there. Suffered on that bus, and ate dust. It was a hard trip, but it was a glorious trip. It had nothing to do with the book, but it wasn't wasted knowledge.
The Cézannes [late bloomers] of the world bloom late not as a result of some defect in character, or distraction, or lack of ambition, but because the kind of creativity that proceeds through trial and error necessarily takes a long time to come to fruition.