I use a notebook and pen. It's like having another screen, except it's my list of todo's and its always open and in front of me. I write a list of todos, check

I use a notebook and pen. It's like having another screen, except it's my list of todo's and its always open and in front of me. I write a list of todos, check them off as I go, then rewrite that list once the page is full or after a few days - leaving off those that are done. I've found it works better than any app (and I have tried many).