I find myself having long periods between picking up the camera. Sometimes it's because I don't have anything to say. Sometimes it's because I've only associated the camera with work or making money, and that mental block is hard to get over. When I do pick up the camera it feels cumbersome. It's like when an athlete has become bedridden with illness and finally steps out from under the sheets to find his muscles aren't as strong as they used to be. There's a vague memory in his head of how the motions are supposed to go, he remembers doing them, but it feels like his arms and legs have weights on them. That doesn't make the motions unfamiliar. In fact the more he does them, the more he remembers them and the faster he is able to do them. Atrophy of the mind is just as common as atrophy of the body.
Every day you don't create is a day you lose the battle against Resistance. Stephen Pressfield writes in The War of Art that every artist fights every day against Resistance, the thing that is stopping he or she from creating. Sitting around and waiting for inspiration isn't how a professional creates. I often forget this fact in the hustle and bustle of New York City. However, sometimes you've been beaten too far down by resistance. Enter a third party to help you cross the threshold. In this case, an old client of mine needed to update his publicity photos. I was only too glad to oblige. Don't wait like I did for these things to happen. Go create. Keep fighting.