I imagine that there is nothing exactly to replace that feeling. I think losing that feeling, knowing you can't get it anymore in life, is part of the "grieving" process that people talk about when we quiet ruining out lives with alcohol.
I know that breaking up is hard to do, been there and done that with love in my life. Feels the same way with booze. But life is so much better and fuller.
Here's to us replacing that high with everything else that life can offer.