Ask HN: What habits made you a better programmer? 16 years ago
It is almost like when you learn to write. Each times you make an error and notice it, the next time you're going to write it right at first.
The first time you forget the name of the function, the second time you remember the name but forget the semi-colon, the third time you forget the underscore, etc. Meanwhile, you remember slowly those errors. In the end, you write your code without any mistake right out of your head.