Don't look past what's right in front of you. If you focus so hard on your "problems," you may miss something great, and trust me...you'll look back with regret later, when that opportunity is gone. Later isn't so far down the road, either.
"It's past the 100th day of school and just about EVERY teacher I know has come to that "ugh, it's that dreadful time of year..." state of mind that happens every single year. Personal lives, caring for students, evaluations, testing, the overwhelming amount of stuff that needs to get done. It's February and we are slowly withering away."