I've got my tin foil hat on standby

The world is trying to talk to me.
A few days ago I was sitting alone and saw a message written on the wall in black marker that said “You are beautiful”
Yesterday there was a big red sticker on the locker next to mine that said “smile”.
This morning as I walked to my lab, there was a scribble on a hall chalkboard that said “You choose to be happy – so have a happy day”

Neat.
I think I’m gonna leave a message for someone else to find…