Language learning

I used to say that I like learning programming, regardless if I'm ever going to have a career in that field, because I just “like the way it it tickles my brain”.
I have now lost a lot of steam in that project, sadly. But I found a new one, and I came to the realization that if programming languages tickle my brain, well, natural languages tickle my brain even harder... that sounds kinky.
By “natural languages” of course I mean like English, Spanish, etc.
So my new project is learning Russian, while also brushing up my Swedish and French, which I studied many years ago. On both of those I think I got to something like intermediate level at one point, but I haven't practiced in a long time, so a lot of that is lost.
One day I want to be polyglot. And I already work as an interpreter, Spanish-English, so it's not too far off to think I'll be able to improve my career in that field by learning more languages.
So wish me luck.