Romans 6:19 I speak after the manner of men because of the infirmity of your flesh: for as ye have yielded your members servants to uncleanness and to iniquity unto iniquity; even so now yield your members servants to righteousness unto holiness.
Do you remember how fanatically you pursued your hobby or even your sin before you were saved? Do you remember how wild and crazy sports fans can be? They study the players, they know their stats, they remember the games and the plays!
Do you remember how you would party? You would drink and dance the night away. There was no price too high to pay, no length of time that was too long, because you were with your friends and doing what you wanted to do.
Now that you have yielded your life to the Lord Jesus how can you do any less for Him? Even so now yield your life to Him. Do not be afraid of being fanatically in love with Him, truth, and living a holy life. How about selling out, going all the way, living life with all that you have for His honor and glory?