Sell drama somewhere else, we're all stocked up here

Another 'crisis' at work today. i started to go down the old familiar road. the 'they-wronged-me-i-need-to-get-upset-and-defend-myself' mode. and then i realized, i really don't give a shit. REALLY. i don't care that this pitiful lady sits awake at night thinking up ways to make me look bad. i really don't care that she gossips about me incessantly to everyone who will listen. i mean, isn't it quite pitiful? this job is her whole world. well, it's not mine. in the grand scheme of things, who the hell cares if i learn how to do a quickbooks bank reconciliation or not? 5 years from now is it really gonna matter?
so i said my peace. and then i realized i don't need to convince them i was in the right. i know i was. i don't their approval, or that of a closed-minded abusive ex-boyfriend/roommate either. the only one i have to live with is myself, and in this case, i'm fine with that.