I travel every week for my job; a very steady routine. Like every week beforehand, I drove my car to IAD, found a parking spot on level 4 of Garage #1 like I always do. I took the elevator down to the underground tunnel, walked the half mile to the Main Terminal. Through security and on to the IAD mobile lounge.

Once I am on the mobile lounge, I use that time to check text messages. Oh crap, I left my phone in the car! I go back to the Main Terminal and back to my car. With the extra time I needed to retrieve the phone, I made my flight just as the gate agent was paging my name and announcing final boarding call. Whew!

The worst part of this? The very next week I almost did it again! I remembered as I was walking away from my car and only had to retrace about 15 feet of my steps. Never forgot before those two weeks nor any time after.