I was thinking that my English skills had not improved as much as I would have expected.

I thought that's because English input must have been not much.

So I increased reading speed in order to input more English contents.

In the past, I read one book of 120 pages a week, but now I can read one book a day.

I was already able to read one book a day, but I haven't. I had spent more time to learn vocabulary and read aloud.

And I'm feeling difficulty in speaking these days.

When I think about what I have been doing, I have lessened practising writing.

Learning English disturbs me these days. I've never skipped my learning English, but I'm feeling that my skills are still there.

I think it's time to change learning strategy. I will watch video from youtube, disney movie, and TV shows.

I was negative about watching native language content being helpful for learning English.

Because when I was a boy, I used to watch TV shows on the channel AFKN(American Forces Korean Network) but it did not help my English skills at all.

I don't believe watching TV shows without any subtitles can help me. I believe watching and reading English materials can help me if it is a comprehensible input.

I read a book titled "Power of Reading English Book". It was about a man who has three children who got a full score at TOEIC in their age 12. He is a university professor who majored in English but he didn't teach his children English at all. He just have read a lot of books to his children. And he showed a lot of TV shows and videos without any subtitle or translation. Util their children could understand meaning of spoken English, he didn't teach any English phonix and grammar. He insists that secret of English skill is a massive input. 

I can not understand how can it be. Only I understand is I have to get a massive input include reading books and watch TV shows. Some of the people says you need 10,000 hours to get there. I think I'm not a kind of person who can learn foreign language easy and I might need more than 10,000 hours of input.