The knock at the door was followed immediately by a yell. “I have a smoothie for you!” My friend Katie was at my seminary apartment uninvited. Again. Katie always seemed to forget that I’m an introvert. (Pretty sure that “introvert” is just Latin for “call before you come over.”) She handed me a blueberry-yogurt-pineapple concoction … More Essential Friendship * 10 Minute Devotional