[nijiro]

I've been studying Japanese on and off (more off than on) for the past eight years. All together I've spent only about two or three of those years actually studying, actively. This is by myself, without classes. And I am intermediate-ish. I'd say Japanese is a really easy language, compared to some others I've dabbled in (like Danish, that's such a hard language!!).
If you're not making progress, you're going about it the wrong way. Theoretically after five years you should be twice as fluent as me, which would be pretty damn good, definitely Advanced level.
Go buy a proper book if you can't get into a class. Cramming does not work with learning a language. Period.