While many of us have become used to (or reliant upon) shooting with a zoom lens - there's something about sooting with a prime lens (fixed focal length) that makes you think about the composition of your shots a little more.
So choose a focal length that you don't shoot at much and stick with it for a week and see how you go (and if you don't have a prime lens to do this with - use your zoom but simply stick at one en of its range for a week).
The problem is that when you rely upon the quanity of your shots to improve the quality of your images that you can easily become lazy and complacent. Next time you go out on a shoot - limit yourself to 36 shots (the number in a roll of film). In doing so you'll find yourself really thinking about your shots. you'' time them better and make sure each shot counts!
Try this - turn off your LCD screen. Some cameras let you do this in your settings while others might take a little self discipline to do this - but I'd be interested to see what impact it has.
Getting back into the game, these 5 ideas may just be the trick up your sleeve that you need. I, myself apply the one film roll rule or just the manual focus rule.There is nothing quite like the thought of capturing a moment and you may have just done so with a single image and the right balance of virtually everything on your camera.