If you are filled with the Holy Ghost you are thinking like God thinks.
“And the Spirit of the Lord shall rest upon him, the Spirit of wisdom and understanding, the Spirit of counsel and might, the Spirit of knowledge and of the fear of the Lord. And shall make him of quick understanding in the fear of the Lord: and he shall not judge after the sight of his eyes, neither reprove after the hearing of ears” (Isaiah 11:2-3)
If I’m walking with the Holy Ghost of God; I have his spirit in me.
“A new heart also will I give you, and a new Spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh. And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them“ (Ezekiel 36:26-27)
“Who hath also sealed us and given the earnest of the Spirit in our hearts” (Corinthians II 1:22)