I write everything down. I have lists by topic all over the place (but a great system of organization).
I find it enormously helpful because what I have trouble remembering what I hear. When I write it down, I can remember seeing what I wrote on a piece of paper. It sounds strange, but that's how my brain works.
Keep a journal if you must. When you record the happenings of your day, you’re forced to think about it again. Doing that is like rehearsing the information. And with rehearsal comes recall.
Even if you’re not much of a writer, you can use your journal to jot quick notes or even sketch out a drawing to remind you of what happened that day.
When you flip through and read your journal again, more thoughts about those events will be prompted to emerge, and you’ll remember more.