Those of you who work remotely, how do you self discipline?

I've been working remotely for a few years now, and I used to be pretty good about self discipline. As the years have gone by, I find myself sleeping in later (I make my own hours) and working shorter hours because I don't like working past a certain hour. How do you guys get yourselves out of bed at a decent hour (I'm talking like 6:00, 7:00 a.m.) and remain disciplined as far as time management goes? I feel like I need a kick in the rear. I'm upset at myself because I used to be great at this. Depression and anxiety is a bitch, I suppose.