My secret is that I do contract work in absurdly remote locations around the world, usually for between six months and two years at a time. I also don't have a family, or a wife, or a house, or an apartment, or a car or . . . well, much of anything. The places I work at are sort of like the military in that transportation, food and housing are all provided, so there's very little to spend your salary on. And aside from my motorcycles and associated riding gear in a storage locker, everything I own in the world fits into a few duffel bags. Currently, I'm on a seven months on/five months off work rotation. I work like a mad bastard at a crazy location for seven months, saving every penny I make. Then when summer rolls around, I have a tidy sum of money in my bank account, and five months to kill with no obligations to anyone, anywhere. It also helps that I travel VERY cheaply. Cook almost all my meals on a camp stove, stealth camp every night, and spending very little money on silly farkles.