Thanks for sharing Lor.
It is absolutely true that our brains create our thoughts. And many of those thoughts are scary, negative, sad, hopeless, and can reflect our uncertainty. This is true of all people; but especially those with MBS.
So, yes, those scary and uncertain thoughts are MBS, just as the physical symptoms are MBS. Good catch!!
Your hike is a metaphor for the process you are undertaking. It's confusing; there are uncertainties about the path; you will be challenged; and you will find your way.
Keep writing and keep going. You are moving towards healing.