At least it's better than the Caribbean, where all the cars are American imports and still left-hand drive, but you drive on the left side. After a few days I got pretty relaxed behind the wheel. The only thing I never mastered was which side of the car to get into. I always went to the wrong side when I approached my car, even after a month. Besides the backwardness of it all, the lanes are narrower as well.
Most cars are sensibly smaller, however.
In rural areas it gets positively silly. They merely pave the center of the road. If you encounter a car coming the other way, you both pop 2 wheels off onto the hard gravel shoulder. Car rentals take some forethought and judgment. They don't exist.