I feel completely compelled and morally obliged to make you watch this speech. Do yourself the favor and see it.

Carnegie Mellon Professor Randy Pausch, who is dying from pancreatic cancer, gave his last lecture at the university Sept. 18, 2007, before a packed McConomy Auditorium. In his moving talk, "Really Achieving Your Childhood Dreams," Pausch talked about his lessons learned and gave advice to students on how to achieve their own career and personal goals. For more, visit www.cmu.edu/randyslecture.
"Journeys" are special University Lectures in which Carnegie Mellon faculty members share their reflections on their journeys -- the everyday actions, decisions, challenges and joys that make a life.

Among other things from the lecture,  I keep this:

"Your critics are your ones telling you they still love you and care."