We followed 4 of these (3, 7, 8, 13) and broke 7 (1, 2, 5, 9, 10, 11, 12) and ultimately failed. The interesting part is that right up until failure, we had checkmarks besides #1, 11, and 12, making 7 yes and 4 no, and then they rapidly fell into the opposite column. It's amazing how quickly they can change.
Those 3 are also quite related - while I still had cofounders, we'd kinda prop each other up during the low points, so we didn't get demoralized, so we didn't give up. But when my last remaining cofounder quit, I tried to keep it going for 2 months, but the emotional burden was far too much. I couldn't do it - if you can, good for you, but I think that there's a lot of truth in these rules.
Also - I think there's too much wiggle room in "Understand your users." I don't have it listed in either column for my startup, which tells me that we probably didn't, but most startups won't have the emotional distance to realize that. Even now, I'm not sure whether we did or not: since getting out to Silicon Valley, everyone I've told about my startup says "Oh, that's a cool idea, I wish you'd been able to finish it." Maybe we should've moved out west before quitting. ;-)