Write anonymous letters to strangers and leave them in public places.

a few people are doing this goal, and I would love to do it, but I have ‘no clue’ what to write, because I don’t want to “scare” the people who might find the letter. For example, what if I write a letter about how I hate the world (I would never write that, but just for example) – I don’t want people to read the letter and go like ‘Omg, what kind of psycho would write this?’ You know?

So, I wondered if there are people who could tell me what they write to strangers. Just for the inspiration, of course.