Something you need to learn as a Program Manager at Microsoft is how to scale. This mean that you need to drive issues, multitask, excel at doing it, choose your fights, etc.
Last week I tried a different approach that kind of worked when I was younger: stretching on the time axis. I found that it doesn't work for me as well as it used to do.
So, this is my word of advise: If you build a big backlog, and you are executing under your expectations, don't stop sleeping. Two reasons:
1. The more you sleep, the more clear your mind is when you are awake.
2. The problem is you are doing something wrong. Either you are spending much time solving the wrong problems or the expectations are too high.
So, if you are lucky enough to work in a place like Microsoft (with thousands of talented people around), do yourself a favor: Raise your hand, ask for help.