My problem with english.

Unfortunately I have to admit it. Language, and in particularly English language is became a big problem for me on my work.
My company has been transformed from local (italian) company in to a big international company and all their employees must become fluent in English in a few months.. I am one of these those.. but I'm not ready, and perhaphs I'm not able at all to speak english in fluent manner.

What do I have to do? I'm studying and reading and listening all the time but nothing seems to be usefull for to make an advance me to for a the next level.

You are very good at English, you can´t become fluent over a night. You must continue learning, reading and listening and after a year you will see results. But you must practise every day, because being fluent in one language takes a lot of time and effort!