I MUST ADMIT that the technical aspects of photography are easiest for me. Color spaces, exposure and lens calculations, f/stops, shutter speeds, and ISO sensitivity are generally objectively certain and quantifiable. On the contrary, artistic considerations such as the use of color itself and composition seem to be subjective, qualitative, and much less certain. However, we must not oppose technique with art: they are not two things, but are different aspects of one thing, and they both must be taken into consideration when making a final image.
When I became serious about photography a number of years ago, I didn't give composition too much consideration, simply due to the fact that I was taking mainly architectural photos:
Saint Francis Xavier Church, at Saint Louis University, in Saint Louis, Missouri, USA.
The hard work of composition was already done for me by the architect. I merely had to discover good camera positions and angles, and the kind of post processing that would express the work of the architect in a pleasing manner. Fortunately, these discoveries came rather quickly to me.
Likewise, I found it easy to take pleasing photos of flowers:
Flower, at the Missouri Botanical Garden (Shaw's Garden), in Saint Louis.
Flowers are intrinsically interesting, and nature suggests composition.