Do you have people to practice speaking English with?  You might want to consider getting into a book club at your academy and reading books in English, and then discussing the book in English at the meetings.

First notebook entry: Introducing myself

Actually, I am learning English in a private Academy, because a second lenguaje language is really important in this at the moment. I need to learn and improve my level because I am finding a job. I am not employerd.
I usually read some books in English, but when I have to speak in English my mind is in blank.

¡Bueno bueno!  Yo entiendo todo.  Cuando hablo en español I feel the same way.