What if you could see what calms you down or increases your stress as you go through your day? What if you could see clearly what is causing these changes for your child or another loved one? Javier Hernandez is currently working towards his Ph.D. at the MIT Media Lab investigating Affective Computing: the field of using sensors and computers in order to interpret feeling and emotion. Starting from the current experiments at MIT Media Lab using off-the-shelf Google Glasses as the human-computer interface, we are talking about the importance of being able to provide immediate/real-time feedback to the user and the repercussions in diagnostic, motivational/gamified experiences. Interviewed by George Voulgaris for Tech Talks central.