In his autobiography, On the Move, Dr. Oliver Sacks does not mention Santiago Ramón y Cajal once, which is surprising, to say the least. But whatever...
He does mention the gifted scientist Temple Grandin who mentioned that "she did not think in linguistic terms but in very concrete visual terms." That meant that she did not carry on internal dialogs with language. I have already mentioned elsewhere in this blog about this issue of thinking visually or linguistically.
I feel that a good way to practice either English or Spanish is to carry on dialogs with yourself. This may sound crazy but it is not. The brain uses the language exactly the same, and it is always better than nothing, certainly better than speaking to a halfwit.
Try it: imagine what your are going to say to someone, how your are going to convince her to go away with you next weekend. Whatever. You have nothing to lose.