How much drinking constitutes sin?

I know drunkenness is a serious sin, and when I drink I stop myself before I get that way. However when I do drink, I drink several glasses of wine and get what I call “happy” but not dizzy, and that is when I quit. I know we are supposed to not be attached to any sin be it venial or mortal. My question is: Is what I do a venial sin?

These links should be helpful for understanding the Church’s teaching on the consumption of alcohol and the moral implications of drunkenness. If you have any further questions or concerns that are not answered by these links, please contact Catholic Answers directly.
Recommended Reading:
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What does the bible really say about drinking?**
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