Maybe you can try seeing a counselor or therapist? It may help to talk to a professional if you haven't already. Others in AA or on this website can only share what works for them, maybe a counselor could help pinpoint what is going wrong in your sobriety plan.
I completely understand that sometimes you want to drink. If drinking wasn't enjoyable at one point or another nobody would become an alcoholic. Some may suggest you "think the drink through" and remember all the negative consequences of your drinking. To be honest this never worked for me. Like it says in the Big Book of AA I seem to forget the negative effects of my drinking pretty easy.