I'm an introvert too and for that and other reasons, AA was not for me. I used this site as my main tool in gaining strength during my early attempts (and you can see I still come back as this community is amazing in many ways for new and veteran sober folks!).
For some reason, reading memoirs of alcoholics helped me a lot too. I'm a reader and am moved by stories of people who share the same struggles as myself. It also helps me realize that things are not going to get better but only decline if the drinking had continued.
Once it 'stuck' my psychological, emotional, and physical health improved dramatically. I sometimes can't believe this is my life. I think we're stronger than we give ourselves credit for when we are in the throes of a long pattern of drinking dependency.
Good luck and keep coming back!