Australian Drivers License

Two days ago I managed to get my Australian drivers license.  I was very thankful to not have to take a test!  I am much more relaxed about driving on the left hand side of the road these days.  I don't have to repeat "stay left" like a mantra any longer while driving.  I do go back the mantra when making a turn onto another street, especially a right turn.  Most of the time I find myself walking to the correct side of the car to drive it, but when I make a mistake and walk to the right side of the car in public, I just  casually pretend I am checking something on the passenger side, then go to the drivers side :)  .

I wonder how long it will take me to adjust when I come back to the States this summer?