BE TRANSFORMED BY THE WORD.

Romans 12:2
2.Do not conform any longer to the pattern of this world, 
   but be transformed by the renewing of your mind. Then 
   you will be able to test and approve what God's will is—his
  good, pleasing and perfect will.
Joshua 1:8
8.Do not let this Book of the Law depart from your mouth; 
   meditate on it day and night, so that you may be careful  
   to do everything written in it. Then you will be 
   prosperous and successful.

1 Thessalonians 4:3-5
3.It is God's will that you should be sanctified: that you
   should avoid sexual immorality; 4that each of you should 
   learn to control his own body in a way that is holy and 
   honorable.
5.not in the passion of lust like the Gentiles who do not 
   know God;