Driving in Japan with the wheel on the right side. The first time I did that last year I drove on the wrong side of the road about 5 times and got a shock every time when I saw all the ghost drivers just to quickly realize that it's me who is driving the wrong way. This year it only happened one time, so my brain seems to adapt to that better and better.
I'm in the same boat! It's a tough transition after driving on the right my entire life. Luckily my wife is always in the passenger seat and will remind me on every turn with "SHARP LEFT" or "WIDE RIGHT". It helps me immensely.