You are pretty advanced; you studied a lot, you know a lot of English. You need to study more, not a lot more and only a little more. The grammar is only 3 books and you already know two and you have your feet in the third. You must practice what you study; learning is a balance of study and practice and you are out of balance - you need to practice more. Now you have the opportunity to practice. You need more words; learn more words - knowledge is power and the words are the keys. Language is culture; it's for having fun and getting whatever you want. Continue!