None of the Celtic Cross layouts I've seen have used this exact wording for a position. The only ones I can think of are the hopes and/or fears card (#9) and the outcome card (#10). The latter seems more divinatory--saying exactly what to expect. If a CC spread has that card labeled as "The best you can hope for," maybe what they mean by that is what kind of outcome you can expect, rather than what you're hoping will happen.
As for the former, call my crazy, but I've actually found it revealing, even in self-readings. But then, I also like to use the CC more as a self-reflection spread. Sometimes you think you know what's on your mind going into a reading, but while looking at the cards, you realize it's a bit deeper and end up thinking about the situation in new ways. I think these are some of the most helpful readings. Sometimes that position in the CC has shown me that the reading was actually about something else, as well. I'd start out reading about one thing, but reading the cards, I'd see that they seemed to be talking about something else going on my life. A lot of times, that's the card that confirms it what the cards are talking about.