How to be led by God

Proverbs 20:27 NKJV

[27] The spirit of a man is the lamp of the Lord, Searching all the inner depths of his heart.

I John 5:10 NKJV

[10] He who believes in the Son of God has the witness in himself; he who does not believe God has made Him a liar, because he has not believed the testimony that God has given of His Son.