The general answer I think is 'immersion' in the target language. The way how to do this is very individual depending on what kind of learner you are. When I interviewed students in Taiwan, I had some who couldn't put together a coherent sentence and it turned out that they had lived in the US for 10! years. On the other hand, I had a few students who were so proficient that I asked them how long they had been in an English-speaking country and to my amazement, they answered that they had never left Taiwan. They had 'immersed' themselves in the target language. Find out what kind of learner you are and what you enjoy and 'immerse' yourself in it. Heinrich Schliemann known as an avid language learner, for example, would take newspapers or a book and read them in a known language and the target language and compare the languages. If you are a visual learner like I am, you certainly need to 'see' the language in some way (even post-its can do the trick). Good luck with your endeavor.

Right now i read Myths and Misconceptions about English Learning. it is push me don't talk to native people. because that way is not helpful. my goodness. but i am in.

for me, I like to listen to music, watch the news, watch tv shows/movies, and try to talk with a native speaker as much as possible.

I love watching TV series in the target language. It's fun and very useful.

Listening to music and singing although reading and watching tv series are always plus :D