Ok list, I agree with the last, finding some sort of vent is crucial. I'd add to that though: Experience a couple of near-catastrophic events while you build it (and ideally before you've got too much momentum). The things that destabilise tend to be looked back on as just-what-was-needed once you've dealt with it - and if you don't deal with it and all falls apart, then it was probably still just-what-was-needed..