I deleted unused icons from my desktop and set up a wallpaper like this:



More "motivation wallpapers" can be found at:
http://www.byrdbaggett.com/free/
http://www.anabubula.com/node/15
http://www.simplifiedsuccess.com/wallpapers.asp
http://www.tnpsc.com/ssaver/wallpapers2.htm