"To be successful, you need to work hard." You've probably heard this idea in some form many times in your life. And it's hard to argue with it. The main problem is that working hard is much less effective if you don't plan for it.
Of course, you can get up in the morning (or in the afternoon — it doesn't matter when you wake up if you have no work plan) and reflect: Do I have inspiration today? Where will I work? And what will I do? But asking yourself these daily questions can be a waste of resources and impede your capacity to do your job.
The opposite is also true: the more actions you perform automatically (i.e., habits), the more valuable time and resources you give yourself for asking yourself more interesting questions and doing fascinating things.