If today you buy or sell any stock (perhaps to shift the money to another stock) then when and how do you go back to check if the bet you made actually worked out or not? This activity in future could prove useful to enhance learning and correct failures, because if we do not look back at our past decisions and actions, then we could potentially keep repeating same mistakes again.
I know some people maintain this manually (writing it down somewhere, or set reminders, etc), but I'm wondering if the bright minds here have a system for that (some Excel template, or some app, etc).