3 keys to effective planning:
Visual overview of your todos helps to wrap your head around them.
You don't need perfect order - what matters is being able to reorganize your stuff easily.
Not everything has to be planned - some things can be decided in the works.
Organizer will help you organize all the things you care about.
Syncs between computer and phone, works offline.
You don't need a complicated system, it will work even as a shopping list.
Easy to reorganize tasks, they can be combined or split as needed.
You can see how it works even without creating an account.
Try out Organizer