Great article! Your comment on how being around hopeful individuals increases your work effort subconsciously is very true. We really do feed off of our surroundings, whether that be people, places, or items. Perhaps if we, as a society, implement optimal conditions for success (instead of dreary cubicles or bland classrooms), we would have more determination to get things done.
I recently wrote an article titled, The Life-Threatening Voyage. It also explores motivation and determination. I think you may find it interesting. Let me know what you think!