For those of you who want to learn a second (or more) language, immersion is really the only way to do it, not only for the language itself but for all of the cultural references, the food, the manners, the art, the architecture, etc. You cannot learn it from a book, and while Rosetta Stone will get you to a certain point very effectively, it won't get you all the way. I find nothing more exciting than learning about another culture by being thrown right in once I get the basics of the language down. I can feel my brain growing when I've done that, and it's pretty invigorating. It's never too late, in my opinion.

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I think the hardest thing for me is being confident in a new skill that I am learning, and not talking myself out of it at the beginning by telling myself that I suck at it--it's a habit that I learned early on and it's a hard one to break. Any new skill takes ALOT of consistent practice and work, and I often have just thrown in the towel when it gets hard. That's my biggest challenge these days, is to overcome that initial "I suck at this" attitude.