Need some really good advice? Look no further than Dear Life Kit. In each episode, we pose one of your most pressing questions to an expert. This question was answered by John Kim, a therapist, life coach and host of The Angry Therapist, a podcast he uses to deliver what he calls "self-help in a shot glass." This conversation has been edited for length and clarity. Won't be home for Christmas Dear Life Kit, I'm single and my parents keep guilt-tripping me into using all my vacation time to visit them for the holidays. I love my parents, but my...