I suspect more than a few doctors would take issue with that statement.
What happened to you isn't the same thing as how you allow that traumatic thing that happened to you in the past affects your here and now.
What makes me an authority on PTSD?
it takes one to know one, I am a dissociated sexual abuse survivor, don't remember much of anything between my 5th birthday and my 10th birthay (and I'm not the first little boy my grandfather was caught with)
Attempting to change the content is futile
You can't "take back" what happened to you, be it childhood sex abuse or trauma from being in battle.
what you can do is change the context
Rearranging the content is akin to rearranging the deck furniture on the Titanic
the ship is sinking and that water is cold.
Changing context is changing what you BE, not what you Do
listen to John Bradshaw!