Put your part completed degree on your CV with a caveat like its pending or incomplete. It should get you passed the initial screening. Then it's on you to pass the tech test. Expect to fail many before you get good at them
Not just piss. Piss is OK (I have several kids and the smell is nothing anymore). It's heavily fermented piss and feces and the odiferous chemicals that stick to your clothes that really sucks.
Don't hate yourself. If you can go a few weeks at a time that's good. Better than me. You are certainly better off for that. Blowing off is not all bad. Maybe feeling shit for a couple of days is a price worth paying for decompressing once a month? I'm not advocating that I would love to stop but at the same time... I also like it and it's part of my culture. Do your best, limit yourself, feel good for your achievements not bad about the failures