For short periods, I find that it's useful to maintain a to-do list. When I'm tired or distracted, a fine-grain to-do list gives me something I can look at and make sure that I'm staying on task.

That's mainly useful for the home stretch, when I have a contracting list of things to do. Generally, though, being in beta is a sign of unresolved tension, and the best thing generally is to address the source of that tension. Or get some sleep.

stephen