I think you're talking at cross purposes. I sounds like your main problem is that you knew what to do, but forgot to do it. This is different from knowing what to do, but doing something else instead (an issue I am quite familiar with myself, my sympathies to GP).
Todo list apps work great for remembering what to do, but don't solve GP's problem one bit.
Todo list apps work great for remembering what to do, but don't solve GP's problem one bit.