When I rely on other people to give me a sense of worth, sooner or later I'm going to get sorely disappointed.
I need reminding.
Usually it's best to have low expectations of people. After all, they are humans which means they're beautiful but they're going to do stupid things. They're going to break their promises, show off, focus on themselves too much, speak insults, etc. I think it's easier for me to remain unruffled if I have it in my mind ahead of time that they're not going to behave the way I would like. This helps me, at least occasionally, to focus on what I can do for them rather than what they can do for me. I like living that way.
A side note: I found this was much easier to do before I had babies. Now that they're older and I've got my shit together, I think I'm returning to it. And now I have a better idea of how to take care of myself, so I feel relieved about that.
I'm still learning how to challenge people to be the best version of themselves while having low expectations of them at the same time. On the surface it seems like those two maxims can't go together, but I think there's a Way.