No, people can see it in me at times. Nicolette usually picks any slight changes in me, even if my eyes change, expression, anything, she is typically very accurate with changes in me. So this means people can pick them up, its just I don't typically change too much anymore, compared to when I could be up and down all day, every day, now it might only be a change once a week or the like, where she can pick something within me, usually around the same time as a little paranoia may sneak up on me. Its totally normal with PTSD, its just about the control aspect of our mind.
Yes, it is all about retraining your brain in relation to management of PTSD. Retraining your brain does play a role in healing existing trauma, because if you have thought since trauma that something was your fault, and someone comes along and looks at the facts presented, then can show a completely different process, ie. your not at fault after all, then it is still an individual aspect to accept or reject the statement. If one accepts the new information, say to themselves something like, "hang on a minute, I have been blaming myself all these years, and have never thought about it that way and this new information shines a whole new light on my thoughts!" That is accepting that maybe your thoughts where wrong, and maybe you should be more open to consider a wider viewpoint! Typically, this is where retraining the brain comes into play in conjuction with healing, as a sufferer has had this thought for years, so they believe that, and now they must retrain their thoughts, kicking out the old negative and replacing with the more factual positive thought, or new information. It is easier for the human mind to accept a negative than it is a positive, this is factual scientific information and conclusive studies. The brain endures and will find the negatives before the positives, because society dictates our learning to focus on bad, not good.
It often makes me laugh when people refer natural therapies to having become a tree hugging hippie, which again is a social aspect that directly correlates within the mind. Most believe if you adopt any natural therapeudic treatments, then you must adopt this tree hugging hippie lifestyle to achieve state of mind. Wrong... Those that fall into that lifestyle, often lost control of their mind before they even began the process, because they succumb to something they fail to understand, being social beliefs.
To control your mind is an art, and whilst the majority of society believe they can do it, you truly don't learn you have little control over your mind until such time as your influenced by something like PTSD. That's about the time a person learns they truly have no current control over their mind, because if we did, we wouldn't have PTSD in the first place, as we would have correctly processed our trauma through talking, seeking help, guidance, etc. We don't though, we endure and shut our mouths tight, thinking that the world will not believe us, hate us, depise us, etc.
Thinking styles are what its primarily about. We make our own choices, nobody else. You either choose to use the negative thinking style which comes so easy or you choose to use the positive thinking style which comes only with a lot of work to become an instinctive tool and way of life for you. People love easy, hence they fail a lot. It is nothing new that to achieve excellence takes work, and that is no different when referring the same to taking control of your minds thoughts and decisions towards your own life. You must want it, not just think you want it, in order to actively begin changing your life. It takes years to achieve, but it is achievable. It takes something like 30 days for the mind to release a negative thinking style and replace it with a positive. So if your changing a few at a time, you will slip up, you will release a negative thinking style, though as you change, you will catch it, stop, pause, apologize if necessary, and change to the positive, continue until such time as the negative is only a thought and no longer words come out, instead only the positive words / statements come from you, or you simply say nothing at all.