I have used a daytimer for years and would be lost without it. I keep it in an area where I frequent most of the day, on my computer desk. Once a week, I pencil in my schedule for each of the weekdays, adding appointments, goals, projects, routine tasks, phone calls to make, etc. During the week, I can add or delete to the daytimer. If I think of something I want to do at a future date, I pencil it in for the upcoming weeks.
This is how I reach my goals and this is how I achieve. Now this method doesn't work for my husband. He likes to have a "running" list of honey-do projects. We have found that this mini chalkboard works great for him. As he finishes a project, he crosses it off. At the end of the week, we wipe it all off and start fresh. During the week, we add to it if we find that there is a "fix-it" or something else that needs to be done. Everyone has a different method for organizing their time and this is what is unique to us.
It's so true that different people need different ways to keep track of tasks. I like to use my notes in my phone and my family has a shared calendar on the phones too.
Day Planners are absolutely WONDERFUL. As a retired ADMIN, I have used mine extensively. Note each birthday, anniversary and important family event. Don't forget to note when bills are due. At the back, be sure to place all the return address stickers, from letters you receive throughout the year, and you have your Christmas card list.