Have a good time writing is the most important.
You need to know that your work will give you benefits beyond money and recognition.
As a matter of fact, I believe that you limit yourself if you write merely to sell a product.
Your text is the most intimate thing you can offer commercially and still, people often treat it as a surface picture of themselves, not realizing that the reader can see deep into their soul just by observing your choice of words, how you structure your sentences and where each paragraph says.
Nice article, man.