0) avoid a mortgage. might be unpossible now, but that was key. fuck the toney neighborhoods, get something that works. rent, save, build incrementally, paydown.
1) pulled everything out of the market in 2000 and 2006. so luck. but it just smelled funny when the p/e ratios get astronomical. be very wary of wall street.
2) do cutting edge tech, find a way to make a difference.
3) real estate. luck again in finding undervalued property. it's still out there.