I'm more of an afternoon/evening exerciser. I'm more alert, have more energy, and put more into it. Sometimes I will go in the morning, but often I'm up till 12:30 or 1, as I work on reports after my son goes to sleep. So a 5 AM session would be impossible for me!
Every month I print out a blank calendar and fill in the days with what I plan to do, one week ahead. I stick it on the fridge. It holds me accountable and I also make sure that I have a good balance of cardio, strength, and intensity.
I'm finally at the point where I think of it as "me" time instead of just something I have to do, and the only conditions for interrupting are fire, choking, or blood!
And now that you don't have to be perfect, you can be good.