You could save yourself from further stress by not worrying about your lack of sleep.
Here's a flowchart which I am putting into daily practice. I think it could help you.
When a problem comes -
1. Can you do something about it?
1.a. Yes? Then do it!
1.b. No? Then what's the point worrying about it?
Updated flowchart to more accurately reflect a thorough planning process
1. Can you do something about it?
Yes. - What can you do?
What is the likely result of that action?
When is the best time to do it?
Is there more than one possible course of action?
No. - What can you do to mitigate the results of this happening?
Is there a way to reduce the risk?
Would talking this over with someone help you come up with other ideas?
Not now but later. - What will be your signal to act?
What else could happen between now and then and how will that affect what you do?
What dangers do you need to look out for between now and the time to act?
I could go on, but I think I've made my point. Now does someone have a treatment program for those of us who are chronically over prepared?