It may seem absurd but I just downloaded a Daily Schedule, and although I don't really like routine, it is something I need. Now at the end of each day or in the morning I print out a copy of this and scribble on it. I don't work to the 15 minute segments that it gives but I plan roughly what I'm going to do each hour, so today I ended with this:
There's time for writing, time for study, timer for making the dinner, tidying the house and other stuff. So let me know how you manage your time.