Someone you care about will be doing something that really irks you, today, but you will have to do your best to avoid getting angry with them. They are a good person, and you know it -- don't let your imagination carry you toward irrational thinking about why they did what they did. Things could get ugly if you jump to the wrong conclusions. So start a conversation with them about what's bothering you, and you'll get to the bottom of things very quickly.
