Sobriety brings positive changes. You'll feel more stable in your emotions, your relationships and life in general. You'll sleep better and have more energy. You'll look and feel healthier as your brain and body begin to recover from the effects of too much alcohol.
Better mental health, in general, is one of the most obvious benefits of being sober. The less you fill your body with chemicals and toxins that shouldn't be there, especially in excess, as would happen with addiction, the more you'll notice your mental focus and mental clarity. This doesn't mean that all your friends are threatened or that all your friendships will change. To be sure, some will stick, but even those aren't necessarily long-term friendships.
Sobriety is like the Disneyland express line, except that the attraction is growing. Even if your friends don't get carried away by the topic of not drinking, it's possible that, if they're not embarking on their own path of self-discovery, tension may occur at some point as you discover yourself and evolve, and you may separate. Ask any sober person if they want to go to a cocktail party or stay home with a package of La Croix, The Crown and a bathrobe. I bet that nine out of 10 of us don't even answer, and we laugh because it's such a ridiculous question.
Sobriety doesn't necessarily make you Liz Lemon, but it can give you the clarity needed to understand that you've been Liz Lemon all your life.