I agree with Claire to a point. I think it will come naturally as long as you do what you like. But you have to KNOW why you are taking the image. Answer the serious questions of why you are taking it. Being able to describe, if only to yourself, the purpose of your image. This can only come through reflection about the whys, instead of the hows of your work. I think this is where shooting with your heart, and not your head comes in.