It's come to light that there are many toxic personalities out there (not on this site, but in general) and how do you cope with it? The general instinct as a human is to try and narrow down the problem and help the individual, but what do you do when it becomes to much? What do you do when everything you say is a personal attack? Is it okay to walk away? If the person is in serious crisis despite the inability to see their flawed perspective, is it okay to say screw it? How do you deal with the guilt of leaving someone so vulnerable?