All bodies are different: some people react well to a vegan diet, others get so broken by the FODMAPs in plant-based proteins that they can only eat meat and greens. When you interpret dietary advice not as "this is what you should eat and drink" but instead as "this worked for me; it might work for you too" it brings a whole lot more inner peace. The basic tried-and-tested ground rules are pretty simple: cover your nutritional needs, enjoy vices sparingly. How that looks specifically is entirely dependent on your own body and mind. Maybe the minor physical-health hit from social alcohol consumption is offset by the mental-health gains from socialising with friends.