I've quit my job twice now to make huge Overland trips (AK->Argentina, now around Africa for two years), all funded by saving money. The tips in this article are good, though I would go much, much further.

My biggest advice is not to think in terms of dollars when looking at a price tag - think in terms of the number of hours of your life you are spending to purchase something. Once you calculate your "real" salary (taking into account taxes, commute expenses, etc. etc.) it turns out you have to sit at work for a LOT of hours to afford a big screen TV. All of a sudden it's not so attractive, and it's easy to not buy one.

Extend that across all spending, and soon you really won't be spending much at all.

I'm so passionate about helping other people do it I even write an e-book on the topic - Work Less to Live Your Dreams[1]

[1] http://amzn.to/2kyrCM3