I understand the impulses that you face! And I understand what you see with your Mom as I see the same thing with my sister, who also drinks too much. When my bro-in-law got called up to serve a year in Kuwait (he had been in the reserves for 16 years already) she turned it into him "choosing" the Army over her and tried to kill herself. She drank too much, told her kids (who were 17- and 19-years old at the time) that she had no reason to live with their Dad over in Kuwait in harm's way. (My BIL is a JAG officer and lived in a dorm and worked in an air-conditioned office, so at least she didn't have the day-to-day he's going to die worries.) She's still a mess. I use this as what I DON'T want to be. You can get sucked into yourself or you can use it as a big mental poster to keep you away from that edge.
My thoughts are with you and I hope you find a smidgen of strength each and every day. Pretty soon you'll be stronger than you thought you could be.
Me: 42/H: 37 T: 10 years/M: 8 D9, S8 Bomb: 7.23.07 Separated: 1.20.08 D Final 3.19.09 Affair started in '05, found out parts in 11/07. They married 11.26.09