how did you realize/accept your parents are bad?

so i started reading “adult children of emotionally immature parents” and wow what a book. i really did sympathize and heavily relate to some of the things in the book that ive read so far. but while reading, i realized that i feel like every time im trying to analyze and reevaluate my moms behaviors and how i was raised, the more i start to doubt myself. what if i dont know what im talking about? what if im just trying to turn her behaviors into something theyre not? what if im just trying to see the worst in her and ignoring all the sacrifices and good that she does? 

im just feeling so confused and guilty. it makes me feel like im being overdramatic and that i dont knownwhat im talking about. has anyone else ever felt anything sinilar? howd you guys get over it? thanks in advance!