This is a blog by a person who doesn't know who he is, what he does, why he does what he does, or what he doesn't do and why he doesn't do what he doesn't do! I think you get the drift... if you still decide to stay on, welcome; else, so long. :) Thanks!
(camp Rishikesh) Swami Yogaswarupananda gave some insight into the Bhagavad Gita from a different angle:
Significance of 18:
18 parvAs of mahAbhArat
18 days of war
18 divisions of army
18 aspects of the human being (5 karmendriyA-s, 5 jnAnendriyA-s, 3-guNA- s, 4 mind-divisions of manas, buddhi, ahankAra & chitta, and lastly jIvA)