I have a little time-triggered recording of a nice voice telling me to wind down and another nice voice in the morning telling me to get up and take a shower. I'm surprised how much it's been helping me out. Prior to doing this, I'd regularly either go to sleep at 4 am or not at all (then crashing sometime around noon the next day). Alarms were only annoying and I'd very easily turn them off.

That being said, I also don't have to deal with normal business routines since I make my own schedule. If you are able, I'd highly recommend finding yourself in a situation like that.