Am I a Reliable Narrator?

This semester I'm in a class about memory and trauma. With each new discussion I realize that my life has not been impacted with the pain or joy necessary for a truly great narrative. I hope, however, that I can experience something that will provide me with an inspiring (or uninspiring) story. I hope that my life will someday provide the narrative necessary for a unique piece of fiction or memoir. If this blog is all I've got, though, I'll make the most of it.
With the discussions in my class about how our lives are shaped by memories, I wonder to myself about the reliability of my own thoughts. We all deceive ourselves on a daily basis, telling ourselves that our actions are either more or less important than they actually are. I read about people who think that their existence makes others' happiness possible. While their stories might contain inspiring elements, I am ultimately unimpressed by narcissism and haughtiness. I am equally unimpressed by people who think that their role in the universe is to maintain anonymity. God did not make any of us to stand back and watch life pass us by. But still, how do I train my mind to think certain things about how my life is, how it will be, and how it has been? My thoughts sometimes run away from me, and I'm left picking up pieces of incoherency. Other times, I have deliberate control over whether or not I think certain things. I mask insecurities, smooth imperfections, and accentuate my talents in my mind, and even if those thoughts never form into words, my persona is somehow impacted by thinking these things. Is this making sense?
If my "present" is something totally relative, something without boundaries or narration, am I able to create my existence into something arbitrary or grandiose? In my mind's words, I write the story of my days, my life, and create harmony from disjointed fragments of experience. I think we all do this, and it is my goal to find out how my mind's story differs from those of the people I know.
Tell me your mind's story...