Vincent van Gogh is now one of the most famous artists in history. His paintings sell for tens of millions of dollars. During his lifetime, the standard account is that he sold exactly one painting. One. In ten years of working as an artist. His brother Theo supported him financially for most of his adult life. He was, by every professional metric, a complete failure.
Van Gogh produced roughly 2,100 artworks in about a decade of serious painting. That's an output of roughly one piece every two days, which is extraordinary productivity. He poured everything he had into his work. The market responded with total indifference. Critics ignored him. Galleries didn't show him. The public didn't care. He died at 37 believing he had accomplished nothing.
The motivational version says: "He kept creating despite rejection! His genius was eventually recognized!" But Van Gogh didn't live to see it. The recognition came decades after his death. You cannot retroactively enjoy success. Being famous after you're dead is exactly as useful as being famous on a planet you've never visited. The reward came, but it came for everyone except the person who did the work.
For every Van Gogh whose work was eventually recognized, there are thousands of equally dedicated artists whose work was never recognized because they weren't Van Gogh. They worked just as hard. They sacrificed just as much. They died unknown and stayed unknown. Persistence and talent are necessary but not sufficient. You also need luck, timing, and someone to champion your work after you're gone. "Keep painting even if nobody cares" is beautiful advice if you're Van Gogh. For the rest of us, it might just be advice to keep painting while nobody cares.