You're a woman of the world- you know you that routines, rituals, journaling, planning, writing down your goals and creating daily affirmations are all great for productivity, achievement, and manifesting. Somehow you also need to keep a schedule because yes, in reality, at least some of your day revolves around some form of responsibility to a timeline.
You want it to be easy, fun, and well let's face it, it would be nice it was also beautiful, practical, and understandable.
"90 day" and "30 day" achievement systems begin on an arbitrary starting day (usually the 1st of the month) with a finish line expected by the end of a set period of time. When I tried those journals, I ended up disappointed with myself for not "winning" in a set period of time, or I hustled and GROUND-IT-OUT so hard that I felt defeated even if I managed to meet a goal.