Frustration

I want to say in advance that I know I'm being irrational here. I just need to vent. I put Quinn down for a nap an hour and a half ago. He refuses to sleep. I have tried everything I can think of. We are supposed to meet some new people at the playground at 3:30 today, but at this rate, I don't see how we can go. He is upstairs screaming right now. I feel like he's doing this to me on purpose. (See first sentence.) I really really need to make some more friends, and I was really excited about today. We had a great morning, a good lunch, and I thought he would go down for his nap just fine--the same way he does EVERY SINGLE DAY!! But no, the one day that I really need to do work (I'm about 40 pages behind on my current job) and get out, and he refuses to cooperate. I tried letting him sleep downstairs on the couch where I was working. I told him we are going out to play as soon as he takes a nap. I tried begging, pleading, threatening, and ignoring him, hoping he would eventually get so tired he'd fall asleep. Nothing. The last time I went upstairs, it was because he was yelling and banging on stuff. The child has dark circles under his eyes, for crying out loud. I crouched down next to him to talk and when I dropped my head in frustration, he reached over and ripped out a chunk of my hair! WTH?!? I am so angry right now that I cannot go back upstairs no matter what or I will say or do something I'll regret. God help me, I need a day (or week) away from that child.