For me about English, the first time that I could understand someone in English I was like "wow".  I was super excited, though I couldn't understand all of the words they were using but I could get what they mean.

This happened again when I could text to someone and they could understand what I mean, then when I could watch English movies with English subtitles and then without subtitles. 

And a couple of days ago when I could finish a book  that I could easily understand, I felt that excitement again. 

But I know that I haven't passed all the stages of fluency yet. I think I will call myself fluent the day that I make the minimum number of mistakes (like a native) and I can easily talk and write about my deep feelings and complex thoughts. 

For me to be fluent means that I can express myself easily in a given language about any topic and that I can read, without any difficulty, any literature book or essay (concerning my professional activity).

I do not care too much about grammar and writing.

@Diana Owaykn, PLEASE, take @bluebottle's advice. You have an entire community to support you!

@Lian 丽 艳, the same goes for you and anyone else who is not feeling confident enough!

@bluebottle, thanks for the new word, "trough"! And your advice to Diana is totally accurate! 

I don't have the abilities to be