You are an excellent driver. That's not even a question. The problem is that after even just one or two shots, it doesn't matter anymore if you are the world’s best driver, because you aren’t the one who's driving. Now it's the alcohol that's behind the wheel, and to be honest, alcohol's a terrible driver. Power of concentration is hurt, vision is blurred and ability to identify and respond in time to dangers is virtually nonexistent.
But all this isn't enough, because then your self-confidence soars to new heights.
Did you drink? Give the keys to your designated driver and, if you don't have one, take a cab or the bus lines that run at night.
No matter what, don't let alcohol do the driving.