I tend to get most of my photography ideas when I’m sleeping or when I’m least expecting them. At such times, its easy to relax & say to oneself that, “I will implement/work on the idea later”. Stop right there. Get a pen along-with a piece of paper and jot the idea down immediately. Lest it flies out of your head.
Its not paranoia but however strong your recollecting ability be, you’re bound to forget something or at-times not recollect something completely. I make it a point to keep a small spiral pad & a pen in my camera bag & one at my home, so I can quickly jot down the idea as it strikes me. If at times, I’m without pen & a pad, I punch the idea into mobile messages drafts. This way I’m safe from letting off a good photographic opportunity.
This nifty tip was imparted on my ears by the renowned photographer, Shiresh Karrale at a Better Photography workshop. He defined this process as making “Photography Scribbles”. These scribbles have helped me immensely to plan a shoot beforehand. I make it a point to make these scribbles as detailed as possible, with lighting diagrams, tips, problems faced & so on. You should also implement this idea in your photography work-flow & experience how overtime it will help you in making better photographs.