I have taught / learn English since junior high school (or perhaps since kindergarten), but the English ability My Poor Growth? What is wrong with me? "This question may often undermine the mind of the English language if you are still there and you stuck without any developed.
If your question so you still need to be thankful that with a question like that, in the chest you still have to be seething. You just keep on trying! Although the English language is complex (for example because a lot of vocab, pronunciation is not really consistent, many exceptions, and many others. If other people why can not you?. Just find out rhe need now is what is wrong, whether the method, the level of seriousness, or perhaps because of other reasons ?