Like a lot of drugs, alcohol will enhance what you already feel. If you feel depressed when you drink, you will get more depressed and sob your ass off. If you are happy and ready to party, you will be more happy and do crazy stuff. If you feel hate, then you'll feel more hate and beat someone down.
The thing about alcohol however, is that it's very easy to change emotions quickly.
Like most drugs, alcohol also has a comedown effect. For most it's simply getting tired.
It also depends how quick it goes into your blood stream.
Lately, my drinking trend is joy, elation, heightened sense of jubilation, want to listen to music, be stupid, outgoing, followed by depression, complete failure, crying, and loneliness.
But it's probably best to not drink alone every night like I do. Drink with others (who you trust), you will feel much better.