How to find a way out about learning Enlish?

Two months passed, I did not write any articles here, that means I did not read any book during this period. That is really a shame!
When I was a colleage student, I found many ways of learning English. For example, listen to BBC or VOA, watch English movies, and go to the biggest English Corner in Zhengzhou city, and read many English books.
I can still remember that my first job interview are all in English, and I made a small success at last. That was really a surprise for me, I can still feel the exciting moment now. That glory should be my pride forever.
After my graduation, I entered a French company as a chemical operator in the workshop. More than two years, I could not find a way out to learn English, because my habbit of learning would be interruptted due to the shift work.
I transferred into logistic department last November. I did not need to work at night, and I can use English in my daily work. But nearly one year passed, I did not find any improvement of my English level. So I should try my best to learn English in my spare time.
Actually, I find that many people in our company are not very good at English. I got this conclude from the Chinglish in the E-mails.
Dear my friends, could you give me some advice about learning English? Thanks!