For me, it was learning English. Although I do make a few mistakes here and there, I’m mostly perfect on it.
The amount of resources you have access to dramatically increases when you know a universal language. I say dramatically because it made me realize how much my native language lacks when it comes to certain topics. The most obvious one to me was tech and computers. Everybody knows how to use Windows but there are very few resources about stuff beyond Windows. It’s actually sad. [insert sad face here]
I’d say so far, my best decision has been saying “ok” when an old coworker offered me an interview at a new job.
OP, do you mind if I ask what your native language is?
I apologize for the late reply. I was really busy these few days.
Well I do not mind. It’s Turkish.