When you try to remember everything that needs to get done it all tends to whirl around in your head making it hard to get to sleep at night.
Writing out a master task list (I’ve found a white board or phone memos work best) puts all of those to-do things in a safe place where they won’t get forgotten so you don’t have to keep thinking about them.
Take a few items off the list now and then as that day’s tasks. The master list will always grow, but you’ll at least have clarity as to what continues to need doing!