Take it from a former binge drinker, there is nothing to be gained by
continuing on the path you are on. The fact that you say you have tried to stop
before tells me you know there's a problem. Unfortunately, because you're not
falling down drunk every day, other people generally see you as a "hard partyer", not
someone with a drinking problem. That's how my drinking continued for far too long...
You've come to the right place to explore different methods of stopping. The forums here
are invaluable, full of wisdom and comraderie. You are not alone. Here you can be brutally honest with yourself and really face your demons with others who have faced theirs.
Wecome! Share your story... There will always be someone here who can learn from your experience, strength and hope.
(As an aside, you might want to let your sister off the hook with your "secret". That can be a heavy burden for someone to carry around and can cause family problems later where you never intended. She might be happy to hear you have signed on here?)