You can read Samson's story in 4 brief chapters beginning in Judges 13. His sin left him in a state of blindness and bondage. He became the laughing stock of a pagan nation and never fulfilled his God-given potential.
King David on the other hand, emerged a better man in the wake of his fall from grace. You can read his story 1 Samuel 11ff, Psalm 51. He repented, changed his ways and sought God's mercy. As a result, his legacy would be summed up as a "man after God's own heart." Unlike Samson, his final days would be spent building a temple, not tearing one down.
If you are dealing with sexual sin, ask yourself, "Do I want to end up like Samson or David?" What are you going to do about it? What kind of plan can you put into place to produce your desired results? How can you live a life that is pleasing to God (1 Thess 4:3ff)
We will talk more about it this week.