ROMANS 12:2

AND DO NOT BE CONFORMED TO THIS WORLD , BUT BE TRANSFORMED BY THE RENEWING OF YOUR MIND, THAT YOU MAY PROVE WHAT IS THAT GOOD AND ACCEPTABLE WILL OF GOD.

(nkjv study bible)

conformed means to "to form" or " mold" world is " age " or " era" instead of being molded by the valves of this world. the believer should be transformed,that is changed by the renewing of the mind. spiritual transforming starts in the mind and heart. a mind dedicated to the world and its concerns produce a life tossed back and forth by the currents of culture. but a mind dedicated to God's truth will produce a life that can stand the test of time. We can resist the temptations of our culture by meditating on God's truth and letting the Holy spirit guide and shape our thoughts and behaviors.Who guides your thoughts and behaviors?