I have struggled with this since I was in my early teens, I will randomly shut down. No trigger that I can think of, it just happens. I withdraw completely, communication becomes difficult, I almost go mute? I feel intense sadness. I used to think it was just my social battery calling it quits for the day, but i will be perfectly fine then an intense wave of despair comes over me. sometimes it’ll last hours, it’s really unpredictable. Does anyone else with BPD struggle with this?