Don't do it!
I promise, It will fuck up your life.
Go for three days or more; carry everything you need. Leave the routine, ditch your car, stuff your canoe, filter your water, eat in front of the woods' thousand watching eyes. Make dialogue with river and bank and you will be changed.
(Not like a simple defrag, a refresh or reboot, but a total reinstall!)
There is one thing you learn on a river, one truth that exposes it's naked self;
....the insignificance of things, everythings
Be prepared to return to a fit of throwing out, abandoning, disregarding, losing interest in, and saying good-bye to things, and people, many things, important things...so you once thought.
It is realistic that you might come home and break up with your not so significant other, propose marriage or confess undying love or devotion.
You will discover a desire to write blogs, take photos, make love, author free lance articles, cook on a backyard campfire, wander in the woods alone in the rain, read stories of adventure, cause fender benders, watch your income plummet due to daydreaming and your penis rise in the most inappropriate of situations or......... worst of all......... write poems.