Well, not to encourage the party side or anything but I'll tell you, one thing that would get my head to clear for a bit there during the rougher months was when the kids weren't home, I'd treat myself to dinner and few drinks of choice (nothing overboard) just a casual night out on myself.
Hang in there.
Me 35/XW 33 S13 & S12 M: 10/17/98 OM & S: 07/08 D final 06/09/09 12/03/09 - 06/13/10 "Piercing" 06/13/10: Engaged to Re-marry 10/17/10 06/25/10: Expecting baby #3 2/14/11