That is not fun, and I wish you a speedy recovery! 
The nervous system isn’t entirely in the brain, and there is “muscle memory” which helps us coordinate our physical activity without active thought. We also have a “kinesthetic” sense - not counted in the 5 basic senses everyone learns about - which enables that mental map of the body. We don’t normally register these as part of our mental activity.
The relevance here, is the something more you are seeking may already be a part of y(our) physical existence. Maybe there is still more in addition to that, but you need to separate parts that can be described by the physical from the parts that cannot.
Or not. This is getting down to personal views on the world, and I do not mean to intrude on your. 