If you are being paid for your photography then its totally understandable to be organised shall we say. But if your not being paid, and its more for having an interest then why plan things, just go out with camera at hand and stumble across what ever takes your fancy, be it a bug, a leaf, or a beauftiful sunset. I even take my camera with me when picking my daughter up from school. (just in case something catches my eye on my journey) . planned or unplanned still create stunning shots.