Mezcla de languages

Yes, it is strange, but I sometimes discover myself thinking in this language and not in my mother tongue.... why? Well, now everyday I speak several languages depending on to whom I am talking. Italian, Spanish, English and some German. I still do not express myself so good in German but once I begin trying to communicate myself in this language, then my brain first tries to build the sentences in German and when it is not possible then I put some words in English hahahaha Of course I need more vocabulary and grammatical background to express better the ideas, but it is incredible how flexible the mind is...