I had a really hard time learning right from left. I didn't really get the grasp of it until early/mid elementary school. I took dance lessons when I was younger, and boy did I have a hard time! The teacher would say walk left (or right) and I'd have to look at the other kids to tell what way I was supposed to go. The only way I learned on my own (this may be gross but oh well) is that I had a wart on my right thumb knuckle. So when the teacher said "right" I would rub that wart on my right hand and know I was supposed to move that way. Strangely, the wart went away after (it was pretty stubborn before that) after I had thouroughly learned my directions. Weird but true. To this day, I still sometimes rub my right thumb knuckle when I get confused about directions, but not as much as I used to.
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"Second to the right, and straight on till morning."
- the way to Neverland