Nightmares About My Past Experiences Driving Me Crazy!

I am not certain if anyone has specifically addressed this in a posting or not. I used to have a part that was driven to curling up in ditches and freeze to death. I had another part (or maybe the same one???) that, in the summer, used to curl up in the car despite the fact that it was 30+ degrees Celcius outside. Another that used to try to scald herself in the shower. I have read other posts where a part(s), with intention, speak about how it intends on killing itself (the... Parts That Want Us Dead
https://www.myptsd.com/c/threads/nightmares-about-my-past-experiences-driving-me-crazy.66768/