Q109. Can I really come to know my heart this way?
Yes, that is part of it, especially the carnality of your mind: "Because the carnal mind is enmity against God; for it is not subject to the law of God, neither indeed can be".
Scripture Proofs — King James Version
1
Romans 8:7
“Because the carnal mind is enmity against God: for it is not subject to the law of God, neither indeed can be.”