[omail]

Marry a native speaker. Failing that get friends who are willing to converse with you exclusively in that language. Since it's Spanish, that shouldn't be very hard.

[michael_dorfman]

I'd change that to "Marry a native speaker who doesn't speak English." It's too easy to revert to the common tongue.

[trafficlight]

You know they make catalogs for that sort of thing. I believe you can even order through the mail.