Was it just the earthquake that made you lose track of that, or was it something that you'd felt that you had slowly lost track of and then that moment, that insight, allowed you to regain that?
So, you can try and convey this to people in a number of ways: You can tell them a very detailed story about how turning swimming into a kind of game is a really good example of why enjoying everything is important, but it still might not sink in for some people. And I certainly know that, because that was the case for me.
You may recall Miyamoto mentioned at an investor meeting a while ago that swimming was a hobby of his. (I can't find the direct source, but there are countless articles about it.)
Finally, Endless Ocean 2 was released in late 2009 (in Japan); there hasn't been one since then. What if some swimming-esque game is coming up for Wii U?
This is pretty stupid, but I can't not share it.