Enlightenment is a sudden event that you may encounter at any time, and all you require is a trigger that hit your soul. Often the trigger is outside, around you, that can shake you or numb you.
Some very insightful documentaries and movies available on Netflix may guide you to understand the term Enlightenment. Series such as Surviving Progress, I AM (2010), and The century of the self may guide you to speed towards Enlightenment.