I've found it pretty easy to drive on the left and actually find it easier in traffic than out on quiet country roads. In traffic there's usually a car in front of you to follow through turns, but on those roads with no other traffic I've found myself drifting over to the right and eventually getting honked at by a car coming head-on. I love roundabouts and wish we had them in the US. If you do get a little confused it does make it easy to just go around once again.