There are parts of our brain that were damaged. We need to construct methods of retrieving memories and emotions. The natural methods and related neurotransmitters have been disturbed and will never be the way they were before the trauma.
This is important to remember.
Here's a quote from PTSD is the Amygdala Hijacking Joe’s Brain
PTSD is a change in how the brain operates that changes the nature of the mind. Instead of approaching each new day and experience with interest and optimism, people with PTSD are preoccupied with anticipating and dealing with threats. It's as iif every problem (or opportunity, or even what appears to be a very minor change in themselves, other people, or the environment), no matter how small or large, is now a threat to their survival.
I've been dealing with this shit my whole life and I still don't funny understand it. But I do understand enough to know that this isn't something I can snap out of after a couple of therapy sessions or a walk in the park. When I look back over the many years I have struggled with PTSD and depression, I can finally connect the dots and understand my behavior. It's unfortunate that it took so many of us years to get to this point, but hopefully by discussing it here we can show others that they are not crazy and they should not allow others to trivialize their trauma.