Remember every horrible drunken thing he has ever done.
Every time he yelled at you and accused YOU of being the reason he drinks and abuses you.
Every time he has done something stupid and embarrassed you and your family.
Every job he has lost.
Every family occasion or holiday he has ruined.
Every time you have had to wipe up urine.
Every time you went to events alone because he was too drunk to go.
Every time he couldn't go to work because he was too hung over.
That's what I do.