We're trying to keep warm, sleeping under a hanky: We need to stop seeking the optimal position for the hanky and go get a blanket!
Now this probably sounds like a cop-out, but it certainly isn't. The blanket is something I'm always shouting for, but ultimately can't conjure up for us without some serious support. My point is simple:
While we're sleeping under the hanky, the risk of freezing to death is high. No amount of effort can hold back the inevitable tide of probability and prevent sheer bad luck from forcing some projects into failure or at least some seriously embarrassing shortcomings. Success tends to be down as much to good luck as good management (and I believe this of many of my own projects).