Speaking of gratitude, my opinion: Thanking people is so easy, but some people forget to say thank you, they forget the people who have helped them. But it's an individual thing. I don't think you should dwell on this , simply choose the people whose humility you truly believe allows them to express gratitude. You have your own way of being, just like everyone else. I, for example, even though I smile, have a very strong character. I don't forget the good and the bad that people do to me. I use indifference as a weapon because it can kill and doesn't leave me feeling guilty. I sleep peacefully, and I want to always sleep that way.