Why do we get mad at other people?

When you’re living with a chronic condition, you may find that your patience can wear a little thin. And that the behavior of other people – especially people you care about – just doesn’t match up to what you expect, and know they are capable of. After all, you’re dealing with a lot. Don’t they get that?  http://justgotdiagnosed.com/resources/why-do-we-get-mad-at-other-people-and-what-to-do/