Often, an unhappy teacher and unhappy students are found in the same place. Sometimes when I'm stressed out or just in a rut it's a feeling shared by my students. So I try to reconnect our classroom community with something kind of fun. We might have a classroom meeting to share a piece of news or unknown fact about ourselves, or I might do a read aloud with really interactive voices. I also take a deep breath and go extra slow to make sure they know what I'm asking them to do, and then play relaxing or happy music (depending on the activity) while they work quietly. Getting the classroom back into a productive flow can really help everyone's mood. Also, for the kids who just drive me bonkers, sometimes I will try extra hard to praise, praise, praise the kids who are being good. It's not my usual style to ignore bad behavior like that, but it does help everyone (myself and the other students) focus on what we have going well for us. On a day when I have a a student with an especially large behavior problem, everyone is on edge - it's really not fair that one kid can change the mood of the entire class like that.