to me having bpd is like being sunburned all the time. usually you manage to get through the day decently but everything is prickly and sensitive. eventually someone bumps into you and you yell at them because it fucking hurt. you know that they didn’t mean to hurt you, and that they probably didn’t do anything wrong by bumping into you, but you’re still hurt. you feel guilty later because you shouldn’t have yelled, but looking back you don’t know what anyone else would have done.