Hi. Welcome to the forum.
The trick is to not take that first drink. That's the one that does the damage, no matter what we think . That's the one that weakens our resolve against the rest and feeds our alcoholic voice. We need to weaken that little beastie, and the only way is by starving it. While you keep taking the first drink, you will keep taking the others.
As far as learning to be comfortable sober, well, that's Recovery and thee are a number of different methods. For me, AA and the 12-step program was key, but others have used diffrent methods. I suppose just read around here and get an idea of what they are and try to find the willingness to give some of them a try.
Wishing you all the best for your recovery. BB