I have two distinctly different mindfulness experiences. Before my trauma and after my trauma.
I am not sure if this is insight @Former-Member is asking for but I will post it anyway.
Prior to my trauma I was almost to a point of being naturally mindful. I believe it helped keep my thinking clear, my self awareness at a high level, assisted in my ability to critically think and make much better decisions. I am also convinced it allowed me to be highly intuitive. It never steered me wrong. I even started to write a thesis on how it worked and gave it a unique name. I believe it is linked to a "sixth" sense a shift in perspective and perception.
That was when I could do it. That was before my life turned to hell.
Post Trauma, I now suffer an inability to concentrate at the level required. I now know there is a paradox. Concentrating at a high level quietens the mind and gives a feeling of serenity and tranquility because the minds is so clear, so aware, so mindful. I used to feel at peace with the world, dare I say the universe.
Now,, I just suffer turmoil and confusion and have an inability to quieten the storm in my head. I can't even think through it or suppress it. I now use the techniques to try to grab just a few precious minutes a day. It enables me to imagine a glimpse at what I used to attain, and even that has taken years of working through fog to get back to.
There needs to be studies into how practicing mindfulness can help MI, to what degree and how successful it can be.
Although I find it very difficult to attain the clarity and quietening of my mind I once had, I do believe the more I strive to retrieve that, even a few minutes a day, it will aid in my eventual recovery.