How to know and do God’s will is an impersonal process and depends on attunement.
God’s will is is beyond good and evil. What makes it good or evil is what it does to us.
God’s will brings us in harmony with Him. As we get more in tune with Him, we will feel more and more joy in our heart.
We must have a healthy respect for our own ability to be mistaken. Sometimes people get a little intuition and then ‘run to the ends of the earth with it. Sometimes God’s will is to go in one direction for a time, then change directions.