Books definitely affect my mood and mindset. I recently read a y.a. that sucked me in to the point I stayed on the couch for hours so I could let my mind reset. Also, Ender's Game had me sneaking around my house at 2am thinking I was a nine year old...
I can get sucked into "crazy" books easily but I read a lot anyway. I lump my two ten minute breaks at work together so I can have time to eat a snack and read and then read again during lunch. I love living other lives in books.