Do you then actually look it up at the right time? I often don't. My anxiety increases with the number of uncompleted items on the list, until it eventually stops me from looking at the list ever again. Filing something away becomes a license to forget.
Ah, well, isn’t a “to do” item, so no anxiety needed.
I’ve collected quotes for years: pretty fun to review from time to time.
If your todo list is becoming too long that’s when you need to break it by project and calendar frames (today, tomorrow, this week, next week, this month, next months). It’s a presentation problem, that you can solve with a task manager or a planner.
My giant pile is my inbox. I refile each task in one of the above boxes when I’m reviewing it. And when I’m doing, only today boxes is important (up 10 items where only two only 3 or 5 are inportant)