Like people say, the only real judge about that is you, however like the two Matt's I'll give you my "solution" to the problem. The funny thing is, my experience is almost the reverse of Matt's, I got into photography as the editor of my college newspaper and then let it drop after I finished school. It was digital that got me back into it with my first real keeper of a dragonfly (practically a cliche now) shot.
Anyways, my solution... Try something completely different than what you've been doing. The approach I took, to get me to shoot more, was a Project 365 with an express goal of not having a lot of duplication. I'll be honest, I had duplication of subjects (I like water drop and smoke photography), but I also tried a lot of new things. I also wasn't always really motivated, every day, to shoot, but I did it anyways and so now, with less than a month to go, I'm almost there and I'm glad I did it. I think I ended up with some really good shots and some, well, not so good ones, but that's half the fun.
So, some of the new things that it got me to try were:
- street photography
- long exposure
- various strobe techniques
- studio portraits
- light painting
- more artistic post processing
It also got me doing some DIY stuff for light modification, shooting arrangements, etc. It also got me to buy more gear (such as studio strobes, backdrop stands, etc.). There are days, during this project, that I've had more fun with photography than I have ever had, especially doing the Christmas portraits of my neices and nephews. So, while I'm sure that I won't shoot as much in the new year when this project is done, I'm pretty sure I'm still going to shoot a lot.
I think the biggest reward, really, was the obvious enjoyment my friends and family got from the shots this year. I've had many ask me to continue, though they have no idea how much work it is. Anyways, it was a success for me personally.