1. Don’ t go online during your holidays! Leave your notebook at home! Don’t visit any Internet cafes! Don’t go online with any kind of mobile devices. Turn off your phone!
2. Being a entrepreneur/freelancer is no excuse, use services like phone.com to stay offline and off the phone.
3. Escape the ‘We are the bork‘-Twitter/FB-ubiquitous presence! Experience yourself how addicted you are to the net. Get over your cold turkey with news papers (or TV which I personally can’t stand anymore).
Yes, it’s possible! Enjoy your vacation! You won’t miss anything important!