I have been searching for a new, less stressful job, but so far haven't even been called. and

YIKES I just made another big mistake on my bosses calendar and scheduled two board meetings for today. He's going to be angry when he finds out (I sent him an email since he's already at the first meeting).
This is the third time I've screwed up his calendar. I have no idea what happened, and he's going to badger me and ask why. If I knew how things got screwed up, they wouldn't be screwed up, right?