Wanna retire while you still got some spring left in your step so you can live out your dream life in the mountains without the responsibility of a pesky job keeping you from skiing everyday? If you model yourself after Tim Stobbs (and many perpetual ski bums) it starts with being cheap. Gotta ask yourself: What do you really need vs. what do you want? After that its some boring stuff about investing (yawn) but lets just surmise in the 2000+ year old words of the Greek military commander Agesilaus:

“By sowing frugality we reap liberty, a golden harvest.” -Agesilaus