Motivation is getting a hold of an idea and carrying it out. Inspiration is the exact opposite, when an idea gets a hold of you and takes you where you were originally intended to go in the first place.
Work is Personal. The Work Matters. I'm in an EMBA program right now, but I view this journey as something that started long before that program, and which will continue long after -- continuous learning, continuous improvement, a "Perpetual MBA".