Two things immediately point out from this article: the thought of seeing an amateur programmer become a software developer and the idea of working on our own things (including improving ourselves) during off work hours. They point out to me because I have been thinking about them for long.
I always see some of the seniors in my office and perceive a never-ending (or at least seeming to be so) gap between them and me. I dont see the path from here to there. This article tries to fill that gap by showing that the two things that are in mind are closely related to each other. Deliberate self-improvement is what leads to professionalism. Very importantly one has to have fun in whatever they do. It ends with this nice quote:
To only a fraction of the human race does God give the privilege of earning one’s bread doing what one would have gladly pursued free, for passion. I am very thankful. – Fred Brooks, The Mythical Man Month