As iron sharpens iron, so a friend sharpens a friend. (Proverbs 27:17 NLT)
If the people you choose to hang around aren't having a positive influence on your life you might ought to consider changing friends! A true friend sharpens you and makes you better for having spent time with them. They challenge and inspire you to reach your greatest potential. Be sure to choose your friends carefully lest you surround yourself with people that make your life "dull."