How long can you survive without mobile or Internet access before you break into cold sweats?
Despite what you might expect, wired little me does just fine enjoying life free of all that stuff. If I'm traveling or up at my parents or even if home connection goes out*, I don't have a freak-out -- but turn my attention to all the other things in life, whether that's nature, a book, family, or whatever. I don't sit around counting the minutes 'til I can get back online or whatever. Yes, when I'm on, I'm on, but when I'm off, I'm off.
* OK, unless said problem happens the minute I have to upload an important web job!