Give it physicality.
Give it a personality.
Describe it. Face it. Challenge it. And beat it down.
The Watcher at the Gate by Gail Godwin talks about creative block. One of the assignments I give my class is to draw a picture of what stops them from writing. Some of them draw a picture of an old english professor and some draw pictures of wild beasts. They report, that after giving their block a presence, they are better able to handle it.