Good Day eh,
Do one step at a time, in the time that you have.
Bed position
You don't want you're bed exactly north. North has a range to it. If that works in your room, just have it somewhere in the North range
Desk position
See which of your four best directions you can face in your cubical without your back to the entrance. Sometimes your back to the entry isn't adjustable, so you'd place a mirror so you can see the comings and goings of the entry while working.
Much Love, Shawn
