I used to feel sick on Sunday afternoons while working - the only thing that would help was to go in my office and w*rk for a couple hours to get a jump on Monday. That was terrible - plus every Monday morning at 7 am all managers were required to be on a conference call - they would always do a role call - the tones on the attendees voices saying "present" said it all.
Now I struggle to remember what day it is! Much better!
Freed at 49. You only live once - live it