We face a critical decision every time we get sidetracked, confused, triggered, frightened or frozen with PTSD. The longer we stay idle, avoiding being present and taking action, the worse our symptoms and PTSD become. We are not speaking of physical movement only. Mental movement is just as valuable for our health.
We are a whole organism with movement of mind and body integrating us. Work, take action, mentally and physically to keep our momentum. When situations or people trigger us, dumping excess cortisol, remember it is just a mechanism, separate from the thought you are feeling.
If we can bring stillness to the emotional trigger, accepting it as part of us without engaging, it reveals itself. Yes it is a delusion of the brain, powerless without the stressor system to fool us.