This is a good question. I can remember many times when I have felt euphoric prior to drinking (the entire day or part of the day) and the drinking just intensified the euphoric feeling. It would feel great to drink after an intense and successful week. When not feeling like this (in college and in my 20s), I would have 2 drinks and stop. When feeling euphoric-I would drink more than that and occassionally do risky things. Was it mania or just drunkeness? I don't know.