I think you're being WAY too hard on yourself. Seriously. I'm a forgetful person (even before the ECT) and I've forgotten loads of important things at work. It doesn't make me stupid or a terrible person. I forgot to do my weekly update this week - I'll just turn it in tomorrow and apologize. Plenty of people have left stuff behind somewhere and had to go get it. It doesn't make you an irresponsible f*** up. Really.

If I were to guess I'd say you're maybe feeling a bit depressed right now. Depression really screws with your self esteem. It lies to you and tries to make you feel like a worthless human being. Don't listen to the lies.

I hope you feel better soon. Really.