Me, 5 years ago: 59 degrees? Screw this. It’s too cold to run.
Later: 50 degrees? Ok, I’ll wear a long-sleeve shirt.
Later: 45 degrees? I’m going to need gloves.
Later: 40 degrees? And maybe a hat.
This morning: 38 degrees? Cool, I can wear shorts.
Perception is reality. Change the first one and you can make the second one whatever you want.