FWIW, seriously, having spent 40-odd years driving on the left, it wasn't too bad driving on the right (with one or two exceptions).
My first experience was driving in the USA. It was a hire car (which amplified al the stereotypes we hold on American cars, too big, slushy gearbox that didn't know what gear to be in, suspension too soft and undamped - we called it "the boat" because it felt like sailing over rough water). It was (obviously) an automatic, and I'd driven automatics in the UK a few times. So, I sat on the left of the car, left foot firmly on the floor, then I'd enough mental input to know which side to be on. The one "difficulty" was turning left at a large intersection, you know, four wide lanes in each direction. I wasn't used to any road system that big, it was very hard to drive the half-mile or so necessary to get to the right of the centre line of the road I was turning in to.
I've taken my (whichever current) FJR on to the Continent where they also drive on the right (except in Italy where they drive wherever they like). My first time, I was following an experienced Continental motorcyclist, he led me round the first roundabout ("traffic circle" to you Yanks). From then on, it was seemed quite natural to ride on the right. There were a couple of occasions where I forgot, one was exiting a petrol station that was on the "wrong" side of the road, the other was having reached our hotel on the "wrong" side, having to turn round to get back to its car park.
If I can manage it, anyone can.
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