In my humble experience, Attitude determines Outcome.
any burden can be made lighter in finding the cause of the oppressiveness, and while not letting go, at least acknowledging that it is a problem.
letting go, can be the hardest of actions for me, and on any journey i went on, i found the physical aspect of it always outweighed the mental, and the weight got lighter in proportion to the arduousness.
I think the physical burden is determined by the mental preparedness,and openness to suffer. Pain is inevitable, suffering is optional, someone once said..some were born into pain, some fall into it, and some,sadly decide they must burden their lives to it.
I hope The Camino for everyone, is a place to take up A burden.. but then to. Lay down some burden on the way
Peaceful Journey to you all.