One of the best parts of photography is the speed at which you can have a conversation with your own visual system, refining it in the process.
Understanding art can be thought of as getting bored and finding something new, which is no longer boring, and repeat. Eventually you find yourself bored by almost everything, but with an intense passion for succinct relatable expression. This is often mistaken for pretension, and many do skip the process altogether; most unfortunately, even people calling themselves artists do so.
My point is all these composition rules are great; it’s invaluable stuff. But, you will get bored of them, and that is the beautiful part.