How do I study English

When I started to learn English in high school,I felt it very difficlut.It is harder than that in junior school,especiallythe vocabulary,the grammer,and the sentence structure.At that time,I almost losed my confidence.And I didn't want to learn English any more.
But I think English plays an important role in the world,so I learn Engliah hard everyday.In the meanwhile,I ask the teachers and classmates to how to improve my English better.
Finally,I have made a big progress in English with my interest going up increasingly.
However,I think ,to attain my goal ,there's still a long way to go.