How to discover our "true nature"?
First of all we need to "define" what we mean by the term "true nature" and how this is different from our actual view of self. Our society seems to emphasize symbols, stereotypes, habits, manners, superficial behavior, pretending, following others and submitting free will to some "leaders". Our "education" seems to be based on views and expectations of people who try to control the flock.
Our True Nature is what is left when we recognize and discard all our habits, stereotypes, manners, and pretending, superficial behavior and become fully conscious, truly natural and spontaneous. Note that some people are so attached to their manners and habits that it is very hard, if not impossible, to discover who they really are.