Don't use DRY but WET: Write Everything Twice. :o)
In practice: The second time you implement something, start out by copy-pasting the first implementation. Once you're done with the second version, figure out if and how to abstract the two implementations.
Basically never ever abstract something if you only have two copies. Copy/paste and move on and be productive. It's usually only if you have a third or fourth copy that you start to see if there is any inherent abstraction to be gleamed.
In practice: The second time you implement something, start out by copy-pasting the first implementation. Once you're done with the second version, figure out if and how to abstract the two implementations.