I think the local version would be something like, "May my strength as a rationalist give me the ability to discern what I can and cannot change, and the determination to make a desperate effort at the latter when remaining uncertainty allows that this has the highest expected utility."
(Where leaving out or replacing 'strength as a rationalist' makes the quote a whole lot more appealing to me if nobody else. Heck, even the jargon term 'luminosity' would feel better.)
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.