Learning Various Languages

I want to learn so many languages, but getting the motivation and momentum to keep learning just ONE is hard. I really should stick to German, but I don't have anyone to practice with, so it gets demotivating after a while. <br> I'll come across someone speaking a language and I'll think "wow I love the way that looks/sounds I should learn that" all the time, and maybe I'll look into it and remember that learning a language is a huge investment of my time and mental effort. It's definitely worth it, but It's hard to choose!