My approach is to look around and see what needs to be done. If it has a due date I do that first. Then put orher atuff in order of importance to me.
I approach the creation of my daily to-do list by keeping track of all tasks on Wunderlist. Then every evening I review Wunderlist and list three items on my written daily to-do. I list these in order of importance, with the first being most important. Then I sleep on it.
First thing after waking is water & vitamins. After pondering a little I will reevaluate my daily to-do.
I continually work on sharpening this skill to make it most effective