The blog Unclutterer has lots of great advice on simplifying and improving your life. I like this tip on dealing with the problem of:
Work life creeping into personal life? Try a battery-only weekend
This is especially good advice in the summer. If you do feel the need to work on the weekend, going battery-only will help you focus on getting the essentials done. And once they are done, go for a walk, see a movie, talk with friends, read that stack of books piling up on the shelf/next to your bed.
P.S. That goes for Blackberries and iPhones too. 🙂
Smart People I Know 