Keep drinking so you won't sober up and wont find the girls ugly

I've never consider drinking it one of the solution to boost confidence, it does work, but remember that's not your personality that is showing, but it's the one that alcohol creates. If you absolutely have to use it for success gaming, you can start taking less and less till you have the same level of confidence when you take 1 shot as the level when you take 10 shots. A friend of mine used to do this, he got me record him when he was gaming drunk and he watches the videos to learn and improve what he's missing from the sober state.