I work with intermediate-to-upper level students, and can help you improve your vocabulary, comprehension, and accent.
I have a good ear for accents and some sneaky ways to improve your pronunciation. For example, many people have difficulty with the word "worthy" but say "Were the" with ease, even though they sound almost exactly the same!
I have a big library of films and books, and find it's useful to let students borrow materials from it. This gives us something to talk about. When you have something interesting to talk about, you forget about that 'psychological barrier'!