Erin Alexander sat crying in her car in the Target parking lot. Her beloved sister-in-love had just passed away suddenly, and she was overwhelmed with grief. When the worst of it had passed, she wiped away her tears and decided to stop by Starbucks to get some green tea before attempting to complete her errand.

As soon as she opened the Starbucks door, she could tell the barista was not having a good day. She kept explaining to customers that the espresso machine was broken and was trying her best to accommodate their caffeine requirements with workarounds, but was clearly stressed and struggling to keep up. When it was her turn in line, Erin smiled as brightly as she could and told the barista to “hang in there.”

A few minutes later, when she picked up her iced green tea, she was surprised to see a message scrawled on the side of the cup. “Erin,” it read, “your soul is golden.” That barista didn’t know her sister-in-love had died, she didn’t know how rough it had been to get through every day or the strength it was taking just to face an errand to Target, but that message meant everything to Erin. As she shared recently with the New York Times, “that little thing made the rest of my day.”