If you are a technology geek, use your phone as a personal organizer or bullet journal. It is easier than trying to manage the paper version. Certainly, an electronic bullet journal or personal organizer is lighter and more likely than not, always right at hand.
Once upon a time, paper planners were the queen of things.
Years ago, I had collections of Franklin Covey day planners. I loved writing on the beautiful creamy pages. Each morning I would review the calendar and the items on my to-do list. All day I would cross off things as I completed them. As new things came to my attention, I would add them to a page in the day planner. At the end of the day, I would move items not yet done to a future page in my calendar.