You have probably already tried to improve your English on your own.
You may have spent a lot of money on advanced English programs. You may have tried to improve by watching American movies, reading books, and practicing speaking with native speakers.
But you still aren’t able to communicate in an effective and confident manner at work.
That’s because you have been studying all the aspects of the English language, instead of focusing on the communication skills necessary to excel in your career.
It's like when your doctor tells you that should increase your intake of Vitamin C. You could take a multivitamin and get some Vitamin C, or you can simply take Vitamin C pills to focus on that one need.
It's the same with mastering the communication skills required for your job.
Focusing on your communication skills takes a lot less time and effort than taking general ESL classes. It is more effective and efficient.
Now is the time for you to focus on what you really need!