Let me try to explain this.Our ways of learning english may be invalid first.Although it seems we have studied english for years,the time that has been effectively used for developing our language skills,especially for speaking, can be very limited. As we have just spent hours a day (if we use the time consciously,that will be enough.)in learning english,and we learning almost nothing in the hours,it is equal to we spent no times for years'english learning. How to master english?Be a master in learning english. Chose one thing and always do the same thing. Unlike the invalid time we have spent, use the time effectively,consciously.