One thing that I've been told many times is that it's important to be interested in something other than photography. The other interests can provide inspiration, subjects, and long-term projects for the photographic interest.
One of the things that I like is jewelry, but unfortunately that's an even more expensive hobby than photography.
For the past couple of days I've been trying to get a good photo of a pair of earrings.
The one above is the best I've been able to do so far, but still isn't something I'd show a potential client. The one below is a serious "miss".
I've done a lot of post-proccessing work on the first: getting the lighting right in Lightroom, cloning, sharpening, creating a slight Orton effect, and finally dodging and burning in Photoshop, and then adding a slight vignette in Lightroom before finally exporting it and printing a copy. The second image has been cropped and had the exposure adjusted, but is otherwise unedited.