If you want accountability to accomplish tasks, yet hate dictating every moment of your day into calendar time slots, consider an option author Julie Morgenstern recommends:
TIP: Write down areas of your life in which you want to spend a certain amount of time on within a week (exercise, learning a new skill, practicing an instrument) and draw boxes, each signifying e.g. 15 minutes or 1 hour. As you devote that chunk of time, check off the boxes to easily reach your goal.
Here is mine that I use to keep me on track with practicing piano:
Visit My Resources Page to watch my 3-4 minute KUTV organizing segments.