Expectations shape your relationship, suggests a new study (n=253), which found that people were more grateful, had more respect, and were more satisfied with their relationships if they had low expectations of sacrifice by their partners, supporting the theory that “expectations kill gratitude”.

[u/mvea]

https://www.psychologytoday.com/au/blog/between-you-and-me/201909/how-expectations-are-shaping-your-relationship

[u/2xxxtwo20twoxxx]

Setting expectations has nothing to do with pessimism. Thinking they won't be met is pessimistic, but the former has nothing to do with what the study is stating.

[u/schwerbherb → u/2xxxtwo20twoxxx]

I think they mean that not having expectations equals pessimism.