i recently learned of personality disorders in 2019, specifically focused on NPD and BPD, since then i've noticed myself started to divide people i know by  either  disorders, sometimes i focus on a single person and i  just keep switching back and forth in determining if they have NPD or BPD, one day  i think they are BPD, next i think they are NPD, and it makes me feel  so fearful and scared of them.