Ask HN: I’m already fluent in English. How can I improve further?

Study "The Elements of Style" (https://www.amazon.com/Elements-Style-Fourth-William-Strunk-...), a classic on better writing. It will teach you about how to really write for the reader and not for yourself.

What do you read in English? I would suggest that achieving deep fluency in a language requires experience with the greatest and formative literature of that language.

I think I'm at a similar level as you, I can speak and write fluently but I suspect that I'm not always using the right words in the right context.

In my experience, the only way to really get a feel for that is to have conversations with native speakers. I had some native (Canadian, British) speaking colleagues in the past, at a time when I falsely believed that my English was near perfect, and it was amazing how much I noticed that I still had to learn.

I also recommend Steven Pinker's Sense of Style[1], as a more modern and definitely more interesting to read alternative.

[1] https://www.amazon.com/Sense-Style-Thinking-Persons-Writing-...

> The only option I could think of is living in an English speaking country, but that currently not an option.

Speaking from personal experience, I think all this will do is change your speech patterns and modulate your accent ever so slightly.

You likely read/write English better than a native English speaker already. Some of the language/grammar I've encountered from my English colleagues in both formal and informal written communication is absolutely terrible, and I attribute that to them "learning" English by way of speaking and "incorrect" colloquial usage before perfunctorily running through their English lessons at school.