I’ve used dozens of productivity systems over the years.
The one I’m currently using has been working well for me.
I write down everything I want to do in a quarter on a list in Notion.
I pin that to my favorites and I can see it all the time.
Then I have a page that is simply called “To do”.
Each week, I create a new page in my “To do” page that has everything I need to get done that week according to my quarterly list.
I also update this page throughout the week as clients have new requests.
Whenever I’m in “working time”, I just look at my list of things to do that week and do them.
Simple.