I function best when I have something to look forward to, but I think actual plans, even vague ones, work better than a 'someday' list for me for that. There are a couple of ideas we've been batting around that I will be very sad if they don't work out. On the other hand, if I'd put "live in another country for a while" on a list (and I would have) I'd have considered that a blue-sky dream that would probably never have happened, and having it there might have made me feel worse rather than better. Until the chance did come up, five years ago, and we seized it.