To "Believe" that I have no control over anything.
Yes, I have Free Will, but I have-no-"control" over anything.
I can drop dead at any moment no matter how much I diet and exercise.
It is what some describe as "Stoicism" and in Christianity as "Thy Will be Done".
My day is nothing but "Adjusting to things and executing "Plan B" (and sometimes "Plan C" ect).
Anything I perceive as good is simply "Blessings and Grace".