The hardest part of learning to drive on the left is not turning on your windshield wipers every time you turn a corner.

Really though, the actual driving part is pretty easy to pick up. You get accustommed to it quickly. You're more likely to have problems crossing the street on foot (you'll look the wrong way for traffic) than driving.

> The hardest part of learning to drive on the left is not turning on your windshield wipers every time you turn a corner.

This is something to learn the very first time when getting into a (new/unfamiliar) car before getting the vehicle moving.

Come to India and drive a few cars from different brands. [1] The rule is to drive on the left side of the road (so the driver is on the right side of the vehicle). But the sticks/levers to turn on the windshield wiper may be on the right side of the steering wheel or on the left side (and vice versa for the turn indicator sticks/levers), depending on the manufacturer. If you don’t check it in advance, you may end up wiping the windshield when you want to signal a turn or end up signaling a turn when you want to get water off the windshield.

[1]: Actually, it’s not recommended for foreigners to attempt to drive in India. The traffic is chaotic and one needs a different way of thinking to drive.

Accidentally turning on the wipers was definitely #1 for me. A close second was nearly turning the wrong way in roundabouts. I’m not sure why regular box turns were easy to mentally flip but roundabouts just broke my brain instead.