Elevator Epiphanies

I made a quick run to 7-11 a little bit ago, and rode down in the lift with one of my building's maintenance technicians. I nodded and smiled at him, and then retreated to my corner of the elevator. When we were nearly on the 1st floor, he said "something is different about you; I don't know what it is." I told him I thought it had to do with being newly 30... It's affirming when an internal glow shows up on your face.