Aaron Doughty explains how empaths and narcissists develop opposite coping strategies from childhood overwhelm. Empaths amplify sensitivity to others' emotions to feel safe and adapt. Narcissists suppress their ability to sense others' feelings, letting them justify their behavior and stay unaware.
Chapters
The empath, their survival mechanism is, I will tune up my ability to feel so that I know how I need to be in order to get by. Now, on the other side of that, you get a narcissistic or controlling person, and what they may have done in childhood is turned down their ability to feel other people's emotions because it was overwhelming in the childhood to feel emotions for both the empath and the narcissist. The difference is that the empath turned up their ability to feel so that then they could change and control themselves to then get by and to feel safe, whereas the narcissist will down their ability to feel so that then they can justify and get by being a specific way and maybe be unaware of how everyone else is feeling, but at least then they feel safe. So both of these are strategies to feel safe, or strategies at least in the perceived sense of safe.