It's really funny sometimes I worried about my English, what!!! Are you crazy! How come that happen? I don't know for sure the exact reason of this, even I used to ensure people, just don't worry about their English, because as long you can understand people and so did people to you, that's enough. 

Back then some people that talk with, they always complain how do they speak unclearly. And most of the time the jargon question like this, how do I learn in order acquire such a perfect accent? And I always suggest them to go watching lots of videos, but the content or videos they would've consumed should be compelling. That's what Stephen Krashen said. 

Probably you get wondered who Stephen Krashen is. Dr Stepen Krashen is one of the most influential professor in linguistic and in nowadays he's really active alongside Polyglot community. He offered his renowned theory, it's called comprehensible input, he said that we all learn language through the same way, which is when we undestand the message. Regardless of pro and cons against this theory, but it could be also lots of testimonials, those who admit this theory proven! 

I also take it this theory to strengthen my English, After knowing the approval of this theory, so I spent a lot of time consuming English contents either watching or reading, I just double down both of this then I felt like I had improved a lot. 

Back to the problem. Every time I joined to speaking group then start off having conversation with others, I always stuck up with my old words. I was like I don't come along with some of the new things that I had been through. I really want to put some new words to my conversation whenever I have, but Damon it's hard.