Comment by Flimm

Yes, I have. In a desire to change some bad habits, I stopped using alarms to wake up, and I configured my router to stop providing me Internet access from 11pm every day. I also put a sign on my bedroom door, saying "this is a phone-free zone". The sunshine wakes me up. I kept this up at least for a couple of years. I genuinely feel like a morning person now, instead of a night owl that I used to be.