I am a native speaker from California. I have been teaching conversation fluency and business English classes for over five years. During this time, I have seen some people improve and some people maintain the same level. The difference between people that improve and those that don't is the method of practice.
As a teacher, I want to be realistic and practical. I want to identify what needs to be improved and practice according to those needs. My teaching method is based on talking and correction. Speaking is the best way to learn a language. In my classes, we will focus on the type of conversations you want to have. We will focus on the environment where you need to speak English and we will improve your ability according to that environment. We do not need to waste time learning English that is not relevant to your goals. This is the key to successful learning. To set specific goals and practice according to those goals.