I did someone a favor and didn’t get thanked. No big deal. I’m not offended, but I’m not inclined to help them again.
I read about leaders who send handwritten notes to people in their teams and the loyalty and dedication such little shows of appreciation create.
I’ve written “how to get a mentor in two easy steps that work.” Showing appreciation influences people a lot. It doesn’t take much physical work or burn many calories. It takes the mental effort to get into the habit. I don’t claim to do it especially well compared to others, but I do it well compared to me in the past.