A bit stronger: Think about all the ways you could fail, then make sure those things don't happen (to the extent you can).

That is, failure isn't always caused by me doing something. Sometimes it's caused by something external. My wonderful new box might not ship if we can't get the chips to make it? I should probably look at lining up a second source. (Yeah, a couple of years ago we saw that that may not work. You can't always prevent everything bad that can happen. You can prevent some of them, though, and it makes enough difference to be worth trying.)