I find that things improve when I lower my expectations, including people. I can improve them beyond my expectations!
I like the angle Sylvia Plath gave it. “If you expect nothing from somebody you are never disappointed.”
See the source of this image: Inspirational Sylvia Plath Quotes (LogicalQuotes.com) for many more Sylvia Plath quotes. I recommend LogicalQuotes.com, one of only two quotations blogs I follow, and I’ve seen scads. Great stuff from all the greats. Nicely curated. (Unbiased review.)