I was looking for an inspirational quote, something to really motivate today. Instead my mind kept returning to this scene from Glen Garry Glenross. It's harsh, obnoxious, and in your face, but for whatever reason, it fits my mood. This will either motivate you or piss you off.
Although Alec Baldwin is talking about selling real estate, it will work for anything. Take the sentiment and apply it to whatever you are working on today.