I didn't learn Spanish, but...

I did learn:

Shaving is overrated -- unless you are interested in women

I can work harder at being a better person

Argentina is where God goes to vacation

How important being Present is

Not only is it possible, but it may be far more effective, to speak English with a local-accent than to speak the native language with an American accent

There’s no correlation between a life of abundance and happiness

How to let go of a loved one but still remember them fondly

Complaining does no good

Giving of your time is more beneficial than giving of your money plus it’s more rewarding to you

You can lose & yet not be beaten

Personal-space is not the same in South America as in North America

True confidence shows itself in humility

I’m comfortable telling people I love them or how important they are to me

To be more aware & respectful of emotional boundaries that exist

If you drink a dozen beers at sea-level or 12k feet, you still have a foggy hangover

A smile is the equalizer for cultural differences

My salsa dancing gets better the closer I get to the aforementioned dozen beers

There is a need for service everywhere in the world