Staying positive even when it hurts

I'm struggling with my new positive outlook today. We just entered state testing at school and it's a trying time. I run around the school, busting my butt every second of the day for a month, and at the end of the month all we hear is "The technology team doesn't do anything". Combine that with the principal of my school designating our office/room as a permanent testing location (even though there are far better locations available) and the school board deciding to eliminate my position on the middle school level, and I'm feeling a bit let down. It's hard not to get sucked in by the negativity, and hard not to say "Well, if no one thinks I'm doing anything, then why bother to do anything to begin with?" It doesn't help that Kaylee had a really hard night last night, so I am running on 3 hours of sleep, most of which was consumed by nightmares that I don't remember, but which made me wake up several times during that 3 hours with my heart racing and my breath short.