Preachers are notorius for doing this with narratives such as David and Goliath. The preacher always associates David with who? YOU!
Guess what? You are not King David! Goliath is not your (fill in the blank). Goliath is my "bad marriage," "dead-end job," "lack of vision and purpose for my life," or whatever else obstructs your dream fulfillment.
They preach saying all it takes to conquer your Goliath is faith. Faith in a God bigger than the giants you are facing. Faith to believe God wants you victorious over these giants who slow you down.
This kind of teaching fosters the false doctrine of, "God wants me to be happy." So I will divorce my wife, leave a job, or make a wreck of my life by putting "me" at the center.
If faith in Jesus is anything, it is this: "less of me and more of Jesus." Yet, to often preaching puts man at the center, instead Jesus should be at the center.
David was Gods chosen vessel for leading His people, the Philistines stood in the way of Gods people. So, God used one man, a shadow of the future Messiah, to bring deliverance in a bold and spectacular way. The story is about God rescuing His people, which foreshadows our Savior rescuing His people in another bold and spectacular way. You are in the story but the story is not about you!
Preacher, handle the Word of God carefully! If you start every sermon with "you" you are doing a dis-service to Gods people and you are spoiling Gods Word of its Gospel power.