but if you try hitting each string slow then progress your speed then you'll get there (i know it's borring).
you might also want to try
----1-2-3-4-5----
-----1-2-3-4-5----
------1-2-3-4-5--- etc.
and like 'markpro' said practice in the dark aswell it really does help, and if you want to (this might sound stupid)try practicing in front of a mirror