Do you think you notice everything that goes on around you? Perhaps you are wrong! Take a look at the Gorilla Experiment and see how easy it is to be aware of only what you focus upon.
 
 
http://theinvisiblegorilla.com/gorilla_experiment.html

The Gorilla
Experiment

 
Ted.com describe this lecture by Ben Ambridge best: "How much of what you think about your brain is actually wrong? In this whistlestop tour of dis-proved science, Ben Ambridge walks through 10 popular ideas about psychology that have been proven wrong — and uncovers a few surprising truths about how our brains really work."
 
http://www.ted.com/talks/ben_ambridge_10_myths_about_psychology_debunked#t-882709

10 Myths about Psychology: Debunked