Less Clutter
Clean, completness, and clarity. There is something refreshing about an empty email inbox. There is satisfaction from accomplishing all to-do tasks. There is liberation from paying off debts.
Something I've been striving for in the past couple of weeks is to reduce the mass of junk thats been accumulating in my laptop. Lots of "I'll do that later" tasks spread out through email, iCal, and text files have been deleted. If I can put a task off for a long time, then it isn't important. The same with bookmarks, ebooks, media, and applications.
Like archiving a massive iTunes library and only restoring select music only with a need, clean out the dock of all icons and restore only the ones that are used regularly. Mine are Firefox, mail.app, iCal, iTunes, iTerm, and TextMate. Any other apps can be called up through Spotlight or Quicksilver.
I use instant messenging only a bit at random times of the day. The IM client I used previously would add a dock icon and perpetually open window that would take up unnecessary space the rest of the time. So I switched to iChat where it can be hidden away as a menu button when not in use. If iChat isn't working that way by default, enable it at iChat -> Preferences... -> General. Check off "Show status in menu bar".
Switching to iChat means a move to a different IM network. It offers a new opportunity to restart with an empty contact list. I added back only the contacts when I have a need to contact them. The end result in a much slimmer quality contact list. Old contacts who wish to can find me with the Jabber account info in my nick.