The Buddhist expression would be that you need to purify your inner nature.

The teacher closest to you is your own, original mind. Your original mind is more valuable than your closest friend, indeed, even more valuable than your father or mother. You should ask your original mind for advice. God resides there. You should learn to listen to what your original mind tells you.  You must achieve this state. The Buddhist expression would be that you need to purify your inner nature. What Buddha meant with the words: "I am my own master in heaven as on earth," is that you will find that God, the Lord, dwells within you when you look into your own heart. Nothing would then be impossible. (133‐178, 10.07.1984)