I don't take that many photos aswell, usually 1-2 of a subject/scene before I move on. Until you get more comfortable with knowing when you got the shot, just carry an extra roll or two and shoot more. Try carrying two bodies, one with low speed and one with high speed film to help you take advantage of situations you are around since you shoot your rolls at a slower pace.
Set a goal, or checklist of things you want to capture that day and try hitting it when you go out. but the most important thing is to just have fun with it, do not be disappointed with outcomes from your first few rolls, it is ultimately a tool for learning and no one gets a full roll of keepers.