Captain! Nervous breakdown ahead!

So I was an idiot and signed myself up for six classes, two of them intensive. And so it goes that a few weeks into school, I am a few miserable Chem HWs away from a total collapse. I'd like to stay focused, and I'd like to be able to get everything done, but I have the nasty feeling that it just isn't possible. So I've got a few choices here. And I need advice, which I probably won't listen to, because I'm an idiot like that (see a recurring theme?)

So. Choice 1 is that I start seriously slacking off in a few classes--English and History really--and sacrifice getting high grades in those classes so I can focus on the intensives and not fail those. Choice 2 is I do as much as I can with the intensives, but focus on my stronger classes. Get mediocre grades in the intensives, good-to-high grades in the others. Choice 3 is I attempt to do really well in all my classes, but I sacrifice my social life, my riding, and any hope of teaching piano. I also have to FOCUS, which is the hardest part of choice 3, and I have to stop being so easily distracted. This is nearly impossible, because I'm determined not to give up riding. It's the only thing that consistently makes me happy, and I need that right now.

Unfortunately, choice 3 is what my parents are leaning towards. I'm not sure how to tell them that if I only focus on school, I'm going to just stop trying period in under a week, because they're not getting it. I need some way of getting rid of all this stress, but I don't think I can talk to a psychologist about it because I honestly don't think that I'm willing to accept help. And on top of it all, I can't even get COMFORT from my parents because if I go to them and I'm frustrated and upset, all I'll hear is "Well, obviously it's because you're trying to do too much and need to quit horseback riding and socializing so much."

And all I have to say to that is "SCREW YOU." So you know how I stand on that particular issue. I'd still like advice though. In person, over the blog, I don't care. Just...advice. Help. Hugs and cookies, even. I am quite obviously desperate.