Therefore, I urge you, brothers and sisters, in view of God’s mercy, to offer your bodies as a living sacrifice, holy and pleasing to God—this is your true and proper worship. Do not conform 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.
As a normal teen, I can get sucked up into the world's ways so often. It's really hard to not follow in the path and footsteps of the way the world wants me to. Whether if it's buying new clothes that are modest or not saying the bad words that some of my friends say. Maybe you're treating your parents in a disrespectful way when you're at home, but at church you're acting like a whole different person.
During these times and during all these struggles, as Christians we need to remember that God is fully in charge of our lives. We need to try to be careful of how we are acting and whether or not we are glorifying him in what we are doing. The verse below is a great guideline to follow while trying to renew your mind to test God's will. :)
Finally, brothers and sisters, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things.