I have since expanded my view on what is "human integrity", as opposed to "personal integrity". i think the two are not the same: the former is "global", the latter is more of a personal nature.
This has come about because of the inclusion of "human" in the thread title :-)
My earlier post was in response to s8's post about being 'authentic" which I saw as being true to oneself or one's belief. regarding your question of 'who is the self" , that may require a new thread as a discussion on that can become quite circuitous :-)