Some people have mental blocks with things like spacial awareness. It's hard for those of us who are 'normal' to understand how something so simple can be so confusing for others but it's a real thing. I knew a guy, a manager at an IT company, who could not tell left from right, so when his GPS was telling him to turn right/left he had a method of holding his fingers in a 'guns' position, the 'L' appears properly in the left hand and that was the only way he could distinguish left from right. He did this every single time he had to make a turn.