I feel your pain!! That pain led me to WBT last school year! You'll make it through, I promise, and probably even have some wonderful learning moments happen along the way! There is hope! I hope you never have another year where you feel like a bad teacher, but if you find success this year, you'll know you can teach anyone!!! Setbacks can lead to success, and the fact that you are using WBT means you're on the right road!
You know what I love about the Scoreboard? I don't have to keep up with a prize box! I've tried lots of different methods of rewards, but WBT is the only thing I can stay consistent with (probably b/c it's free!!!). It also teaches kids more intrinsic motivation....I've used Mind Soccer as a reward and it's more effective than two minutes of free talk.
Best wishes! Keep posting!