Practice, Practice, Practice
Every time I contribute to my blog, it involves practicing my craft beforehand. It helps you become proficient with your camera, focusing techniques, as well as being able to efficiently compose a shot in a fraction of a second. It also helps you become more objective at selecting your final choice of photos.
The more you shoot and the more you edit and discuss your work with friends, the better you'll get, even if it takes a while to be noticeable. Practice doesn't just involve using a camera, but processing and choosing your images as well.
Consistency
It's an excellent reason to practice consistency in both the making of photographs but also your editing of photographs. Almost every post I've made to this blog has been a horizontal 35mm focal length photograph in black and white. Only on rare occasions has it been anything else.
It has taught me that I can make strong photographs using only one orientation, one focal length and one processing style. It teaches you to prioritise the subject matter and composition of your photographs before anything else.
As an added benefit, it also creates a strongly connected body of work with which to draw from after months go by. It's the reason I want to create a book at the end of the year. All of these photographs share a single, consistent style.