I do the very same things, JF and indigo, start getting more down when things seem so normal. Like indigo said it's the reality that it won't be the same, or back to normal.
Keep pushing through until you start feeling better again. The ol' fake it until you make it routine. There will be many more days ahead like these.
Me:49 H:47 S: 16 T:27 M:25 My EA: 2001 His PA: 10/2007, 6/2013 Separated, but H still in house
Find your Shambala: a place of peace and happiness.