There are episodes that have been hard to stomach as they cover similar situations, thought process, etc to what I've gone through and is like having a mirror being lift at a moment when you're not expecting it. I admit I get very upset seeing certain scenes towards those fictional villains or other character actions and comments.
There was a scene in Magical Girl Lyrical Nanoha that I got so pissed off at what I was watching that I nearly threw my TV out of my balcony window (I lived three stories up at the time). I refused to finish the anime for like three weeks. But I'm glad I got over myself and finished the season. Without that powerful scene, the anime would have been rather flat.