Score tonight's plan and see how tomorrow morning is likely to feel.
Hangovers are mostly predictable: how much alcohol, how fast, how much water, whether you ate, and how much sleep you get. Answer five questions and get a 0–10 "tomorrow feel" score — 10 means you'll wake up fine, 0 means cancel your morning now.
In rough order of impact: drink less and slower (the only real cure is prevention), water — one glass per drink is the classic rule because alcohol is a diuretic, eat before and while drinking — food slows absorption and lowers your peak BAC, sleep — alcohol wrecks REM sleep, and a short night makes every other symptom worse, and skip the nightcap — drinks in the last hour before bed are the ones your body is still processing at 7am. Congeners (the compounds in darker liquors like whiskey and red wine) are also associated with worse hangovers than clear spirits.
Sip predicts your morning from your own history, not averages.