Every Way Out but In

So, I made a mistake. That's the general consensus at work now. I acted upon instructions before double-checking their accuracy. My boss changed her mind and it was too late for me to stop the action from taking place. I will admit that it was I, somehow, that caused this error. Halfway through the action I stopped and wondered if I shouldn't verify, but it was too late to reverse the previous few actions. (Let me sum it up...boss says "Call A, B, C, D, and E." The next morning, I do call A, B, C, and then before I do D, I think...I better make sure she still wants this. She wanted me to take back B and C, but it was too late. (A, somehow, was fine to do. See how confusing this is?) C didn't really affect anything, but B did. And now the only topic of conversation is how I did B and that wasn't what she wanted.)

So now I've put countless hours and effort into a project that, I fear, will only be remembered for my 'faults.' I've done the best I could to keep everything sane. I guess I did the wrong thing. I'm not sure how doing what you're told is wrong, but I should have known if it was something I liked it must've been wrong...or something like that. I have no clue. I'm confused as hell and upset beyond recognition. I should be on a high...this is the week! Just days until the event. But all I can think is, "Which way to get the hell out of here?" I want to crawl under a rock because I'm afraid I've failed in my effort to make this year the best of all previous years. I tried to hard maybe...took too much initiative...was too efficient. Sometimes it's better to just keep your mouth shut and check 3 times before completing a task?

I don't know...I just know this isn't how I wanted my week to start.