What is it that makes a creative success? What is it that will touch people's lives in our music and art? These are good questions that any sincere artist will ask, not just once, but throughout his life of creativity.
Regardless of whether or not one's art reaches the masses or touches just one soul at the right moment, a creator has to know that it was worth the effort to give his time and his talent in bringing forth beauty.
Whether or not his work is seen by others as a success or failure is not really the point, but rather the boldness to 'catch the wind' with the 'sail' of his imagination. This is what brings meaning to the creative process.
It doesn't matter if it's good enough for anyone else to hear, just sing, sing a song...