I just watched the movie Revolver, a very deep thinker movie. I loved every minute of it, everything within that movie is very true.
If you haven't seen it check it out on Netflix.
Quotes for the end of the movie:
The ego is the worst confidence trickster we could ever figure or imagine because you don't see it.
The problem is that the ego hides in the last place that you would ever look: within itself.
It disguises its thoughts as your thoughts. Its feelings as your feelings. You think it's you.
Peoples need to protect their own egos know no bounds. They will lie, cheat, steal, kill, do whatever it takes to maintain ego boundaries.
There is no such thing as an external enemy no matter what that voice in your head is telling you. All perception of an enemy is a projection of the ego as the enemy.
In that sense, you can say that 100% of our external enemies are of our own creation.
Your greatest enemy is your own inner perception; is your own ignorance; is your own ego.