You'll be so deep into the forest, that you won't be able to see the trees. You won't be able to see some of the obvious solutions that are sitting right before your eyes.

I think this is vital. I've only just discovered how difficult it is to distance yourself; these things come slowly and you are so close you just CAN'T see.

Another thing lots of DBers say is: "Patience is your friend." Then they say: "God, give me patience. And give it to me NOW!"