turning inward to self, is most likely satan's biggest weapon...
Genesis 3:4-5 LSB
And the serpent said to the woman, “You surely will not die! [5] For God knows that in the day you eat from it your eyes will be opened, and you will be like God, knowing good and evil.”
Say, that brings back memories. There was once a Roman Catholic Mystic who taught that stuff...turning inward to the God within us. Gene Guyon, who was among the last of all the people to be imprisoned in the infamous Bastille. A guy named Fenelon also taught that philosophy as a way of achieving deeper, more intimate spirituality and closeness to God when going into that inner place to be with the indwelling Lord.
I just never could get into that stuff because of the word of Christ when He taught His disciples how to pray. It was never looking inward, but rather acknowledging God's presence and possession of Heaven, not our inward parts. Where it's true that He taught them that before the cross and the New Covenant, neither He nor the apostles gave to us anything different after the cross.
MM