I averaged about the same, at first I was embarassed being seen carrying beer inside everyday and started carrying a empty cooler to work just hide my daily afternoon malfunction. Once I lost my embarrassment and felt no shame I thought there was no way out.
The vast majority have tried multiple times, and there's nothing wrong in that. You can quit, I suggest you pick a path you think would help you succeed. From many that's AA, religious study, secular groups, solo determination or a combination.