He becomes your Teacher. Jesus said when the Spirit of truth comes, He shall teach you all things. He didn't say 'some things,' but ALL THINGS. Glory to God! Anything in this life, anything about life, anything about God, ANYTHING at all, the Holy Ghost can teach you if you will ask or let Him. He will open up the Word of God to you and unveil the realities of God to you. He will be your Teacher.
If the Holy Spirit takes over your family, your business or your health, it doesn't matter what troubles you've been experiencing or what's been going wrong, you will begin to go from strength to strength, from grace to grace, from faith to faith, from success to success and from greatness to greatness.