I'm not going to recommend this to anyone, but this is what I do. I work 40 hours a week and each night stay up till 3 or 4 in the morning, writing stuff. That gives me a few hours of sleep each night. Of course, it's not enough. But I'd much rather be writing than sleeping. I remember the days I was working full time, going to school full time, and also trying to write every night. I wouldn't recommend that, either, unless writing is what you love to do. Do what you love. And do what you have to. There really is time for both if you don't mind losing some sleep and missing out on a party or whatever here and there. Of course, my mindset is this... When I go to work, I'm taking a break from my writing.