Enlightenment, as I understand it, is the direct experience of reality, free of the delusions that are so common to man, which are the cause of all suffering.
Such wrong perceptions may include the belief in a independently existing self, misunderstood experiences, painful emotions, etc.
To experience reality as it is one must cultivate the energy of mindfulness in order to dissolve their illusions.
Once you have accomplished this, you will have fully recognized the divine spark within yourself and all things–the same creative force that created everything that has ever been. That spark is you and me.