No human being can understand all there is to know about God. However, God’s Word is chock full of admonitions for us to seek understanding! The book of Proverbs alone is like a broken record on the subject. I could write many pages listing all God’s complaints in the Bible about how His people don’t understand Him and His ways, to their own harm.
So the better question is not “Is it possible?” but “How shall I respond to what God desires of me?”