I reach my peak ambition routinely somewhere around 12:30AM. Everything seems easy, then, and I can see with stark clarity all the little steps I need to do to complete some larger task.
Eventually I go to bed, and then I wake up and all that ambition and clarity is... submerged. It's not gone entirely, it's just very hard to reach.
It's a rare day when the inspiration/energy combination hits me early enough so I can actually get something significant done before the kids get home from school. I get hung up on the idea that it's not worth starting because I know I will be interrupted before I can finish, but I know that's an excuse.
The question is, how do I get over that? I want to be able to work more, and more efficiently, during the day. I'm out of practice, too used to writing being night-shift work.