An example in the Bible of such a man that was willing to seek, sacrifice, and follow God's will was Josiah.
Josiah is an more unknown man in the Bible (2 Kings 22-23). His story shows his conversion to the gospel of Jesus Christ. He showed how leadership can change a nation. He made great sacrifice to have his people AND the Northern Kingdom to return to God.
Joseph B Wirthlin talked about staying on the straight and narrow.
King Josiah was a king of Judah who reigned in righteousness. When he was only eight years old, he succeeded his father as king. Scripture tells us that although he was just a boy, Josiah “did that which was right in the sight of the Lord, … and turned not aside to the right hand or to the left.” (2 Kgs. 22:2.)
In the end of our conversation last night, Sweetheart said to me, "If you don't ask, how can you change. We already know it will be hard, but the reward is so worth it. We've been promised." The promise is when covenants are made with God the Father and Jesus Christ "then are ye in this strait and narrow path which leads to eternal life....unto the fulfilling of the promise which he hath made, that if ye entered in by the way ye should receive." And for me in parenting, this promise is to have the peace of mind of knowing that I am doing my best. Taking the first step and asking always the hardest. And last night I took the first step.Even though these teachings of the Savior are plain and direct, we are still at risk of getting sidetracked. Some people choose to follow the teachings of the Lord and of his living prophet only when convenient, but reject them when sacrifice or deeper commitment is required. Some fail to follow only because his divine teachings do not agree with their own preconceived notions. (Source)