Thanks Andrew, thanks your suggestion and i'll make myself do it. but I thought the important problem for me that is I'm not insist enough.

If your spoken English is fine, then you should focus on things like publications (newspapers, magazines, even the backs of soap bottles and things like that) and media (literature, videos, music, even obscure things like podcasts.) Surrounding yourself with media produced in your target language (English) is actually surprisingly helpful. When I first started learning French I read two novels in the language. I learned common rules, and if I came to a word I didn't know, I would look it up in a dictionary (even an online one). That way you can add new vocabulary while seeing the context it is used in. I hope I helped!