THE WILL...SELF'S FRIEND AND ENEMY

So I'm reading Eknath Easwaran's translation of the Bhagavad Gita. I just read a passage that is going to keep me pondering for awhile...mainly because it is so self-evident. I know from past experience that anything I find so self-evident that I don't even have to think about it is probably over my head.

Here's my new ponderable:

Reshape yourself through the power of your will, never let yourself be degraded by self-will. The will is the only friend of the Self, and the will is the only enemy of the Self. (6:5) [I'm guessing the "6:5" is the chapter and verse in the original Gita, but that is just a guess.]

I'm going to go ponder.

Thank you.