That's a good thing to do, analyze the situation before judging too much of it or beating yourself up over expectations, sometimes it feels like some are letting us down because they are having personal difficulties. Some people can be exhausting indeed. When it comes with dealing with people, don't take things too personally when you feel let down. I'm sure you will learn how to set healthy boundaries without compromising your emotions with experience. I recommend reading the book "The 4 agreements" by Miguel Ruiz, it's a short but worthy read.