A while back I was in a business class, and I had this thought, that I really wish there was a way for me to log how many mental spoons* (how much mental energy) it takes to do a task. Something like a period tracker app, or a habit tracker, that could allow me to enter some data, and when it had enough it would be able to estimate how much energy a task would take, and how much energy I probably have on a given day, so that maybe I'd have an easier time managing my own energy. This idea developed into extending to physical spoons, as I've since developed chronic pain. It's not just that I suck at time management, although I do suck at that, it's that I have a hard time knowing how mentally or physically strenuous an activity will be for my mind/body, or how much energy I will have on a given day.