I'm struggling to discern if my coworker is just an unhealthy ESFP who struggles with conflict and immaturity or a moderate narcissist (maybe both?). If just an unhealthy ESFP, then perhaps there is hope for positive change though proper supervision. My coworker confirmed she tested as ESFP and she certainly has a lot of the positive traits - fun-loving, spontaneous, and adventurous. I admire her youthful spirit and strong social skills. However, her social skills often come across as manipulation. She can be very charming and overly friendly, showering people with fulsome praise and appreciation. This behavior often wins favor with people or it gets them to let down their defenses and disclose personal information to her. She will then use this knowledge as the subject of mean-spirited gossip. It comes across as two-faced passive aggression. She has also engaged in a number of covert schemes to discredit or sabotage other women in the office with whom she shares responsibilities. Mostly petty stuff. For too long I was naive and enabled the behavior as a listener. It took 18 months to see and better understand what was happening. As soon as I saw the pattern, I began to disengaged and guard myself. I thought I was cautious and maintained civil, professional communication, but she picked up on the change immediately and complained to me and others that I was no fun because I wouldn't talk to her. Her behavior then escalated to insubordination. She missed multiple meetings in a row for which she provides support. She offered unconvincing excuses and no apology. She then refused to perform a task I assigned, procrastinating for a week despite my asking her nearly every day. She then outright told me she couldn't do it. When I asked to speak to her about the problem, she ran and hid in the bathroom. The task was routine for her job position, but time sensitive. I end up having to enable the behavior and do the task myself. The next day she agreed to a private meeting with me in a place she felt safe. I explained that I wanted to understand what happened and see if we could find a way to get passed our differences to get the work done. She agreed to these goals but made no effort towards them. She told me she never refused to do the task, she just misunderstood instructions. No apology. For the entire meeting she denied the obvious, revised facts and events I had carefully documented, blamed me and others, and gave me wildly implausible excuses. She needs "friendliness" while I need trust and accountability. I'm hesitating to take the matter to my supervisor. The behavior is under the radar and it's such petty crazy-making. She hasn't violated any official company policies, but left unchecked this behavior could create a toxic workplace. As an INTJ, maybe this is just a conflict between opposite personalities. My actions in response have certainly exacerbated the situation and her overtures of "niceness" in the office make me doubt my instincts. It seems ESFPs just want to live in the moment, do what they want, and not care about the consequences of their actions. Maybe I just need to adjust my expectations. Can anyone with ESFP experience advise?