I studied abroad in Costa Rica when I was 19 and I remember getting really sick and at something like 2am, my host mother kept trying to chit-chat with me in Spanish and I was feeling so frustrated. But, it helped me learn faster, because I had to struggle through it, not having an English outlet.

Also, I learned Swahili mostly because I didn't have much money in Tanzania and had to negotiate with the local transport so I didn't get charged a super high price.