recently got a PTSD diagnosis and a (re)-diagnosis of severe major depression.

I've been mentally ill my whole life and had general anxiety disorder (probably a PTSD misdiagnosis) and severe major depression since I was around 9. I'm 21 now

I have no frame of reference for what these conditions even mean since I do not know what normalcy is.

what is it like to feel normal and without these conditions? what's different from day-to-day, especially internally.

I have a hard time grasping at what my goals are as a person to get out of the misery, since it's all I know.