One day a friend of mine, let’s call him Dave, initiated a discussion around the decision to get into therapy. Dave knew I was seeing a therapist, and he was trying to understand if he needed to go. I knew Dave well, and for a long time. My (silent) thinking went like this: “Of course you need therapy, probably lots of it. I don’t even understand how you can ask yourself this question”. I did not find it wise to voice my thoughts though. What I told him instead was to look for any sign of the dark triad in his...