Not the word “good”, more “state of disposition”. I always wonder how I stand with God. I occupy myself with my performance, or from God’s point of view, my job description, that is “what should I have done, what should I do”. “good” is reserved to Him who that assessment is reserved.
The first part of my life was focused on what I did good or even bad, but as I got older, and being my worst critic(fooling no one, Ah!), I felt that was too reassuring and unsafe a posture for me. My esteem did not drop, it’s more a self realization of my place in the Divine scheme of things.
My day is one caught up mostly with duties and my relation to my wife and family in the context of my community. Now you can see why "good’ fades, as all of my day is a backdrop designed by God, with all of the billions of variations and choices I could make in this setting already known. The day has ready for me the next assignment and I could only do my best insuring the good is given to the one assigned to me, and that is why I cannot have it.
So I know now what the Book meant, “all is vanity”. I didn’t get it until I was older, and now I am content knowing I at least completed a task to the perfection expected of me. However it does feel “good” to have God as a friend.