I had a "self-defense instructor" tell me once, that if I was an amateur, and couldn't devote myself to full-time training, to "learn 1 blow, and concentrate on throwing it well".
in reply to (OT) "Learn one new language every year"? Yeah, right.
That is my approach with programming too. I like Perl, Perl can do just about anything I want, so I figure I'm better off learning Perl well, than being half-ass at 5 different languages. Even after 5 years, I'm only three-fifths-ass at Perl. :-)
I'm not really a human, but I play one on earth.