No matter how one looks at it, we have to narrow the focus, find what's important, and with whatever skill we have, try to express our personal vision with dabs of paint and turn that into shapes and values with some kind of intent. We have to start by simplifying and organizing the information. Light and shadow determines our three-dimensional reality so it's generally a good place to start. Shapes? Well, those Euclidean things are handy - rectangles, squares and the like, but my overall favorite and the most dynamic are triangles. Do not, however, get lulled into thinking that this simplified version of reality will always suffice. What about variety? Can one imply complexity and still maintain simplicity? The possibilities can be endless.
Narrow the focus, find what's important, and by all means, avoid trite and predictable information.