People who take on complicated creative projects become lost at some point in the process. It is the nature of thingsin order to create, you must internalize and almost become the project for a while, and that near-fusing with the project is an essential part of its emergence. But it is also confusing. Where once a movies writer/director had perspective, he or she loses it. Where once he or she could see a forest, now there are only trees. The details converge to obscure the whole, and that makes it difficult to move forward substantially in any one direction. The experience can be overwhelming.

Creativity, Inc. by Ed Catmull