Nutty in the Loft

Mi problema no es la imprudencia como siempre he creido.
My problem is not the imprudence as I always believed.

Es la loca de la casa, la pensadora, mi cerebro que va a mil por minuto.
Is the "nutty living in the loft", the unstopable thinker, my brain that runs a thousand miles per minute.

Down here in Colombia where I live we call the brain "La loca de la casa" which translated to english means something like... there is a nutty or crazy someone linving in the apartment of loft above, and by above we mean our brain.