Both lisp(s) and smalltalk took me about 18 months of decently serious use before I had a 'I get it moment'. Stick with it and it will come.

I'm hoping that if I keep at it with Haskell, that eventually I'll have my 'I get it' moment with it as I think I can learn a ton from when I get it, much like I did with Lisp and Smalltalk.

I've learned things from many different languages but the two I've learned the most from where Lisp and Smalltalk.