YOUR consumption of alcohol or power over it isn't what's at issue in your situation. If you were an alcoholic, you'd be in AA, not Al-Anon. The steps are similar but the point can be different.
But you are powerless over the effects of alcohol abuse in your life. Your ABF's alcoholism affects you, and you are powerless to control his choices. All the expectations in the world will not keep him from drinking again if he so chooses. Out of your hands.
So, in light of this complete inability to control or cure, we work on ourselves, starting with this understanding that it isn't in our hands.
If you're still thinking that because YOU can put down a drink without a second thought, an alcoholic should be able to just as easily (if properly threatened, pushed, reasoned-with) then you need to continue your research into this affliction in addition to working Al-Anon. That inability is what makes them alcoholics. They're wired very differently, sad to say.