It is a hard thing that most people equate fame and fortune with success and value. Is a song you love any less valuable to you if only 100 people have heard it? Is the musician who created that songs less of a musician than the musician who puts out auto-tuned pop that sells millions?
Unfortunately musicians (and most creative people) usually judge themselves by the same formula. Fame and fortune (or sales) equals success. Naturally, anyone doing creative work wants their work to reach as many people as possible. So when fame doesn’t arrive, thoughts of failure creep in.
There are countless excellent works of art/music/writing/etc. and artists that will never get the recognition they deserve. It’s heartbreaking if you dwell on it. But it is the reality of life. Not everything worthwhile gets recognized. The opposite is far more common. But if you find value in Barbara Robinson’s music then she was successful reaching you. She doesn’t know it. And that’s sad. But how many artists ever really know the value people place on their work? It’s a hard life being creative.