Challenging quotation

I like this quotation attributed to author Isak Dinesen:

When you are sure a task is utterly beyond your powers, approach it one day at a time, without hope and without despair.

Isak Dinesen was the pen name of Karen von Blixen-Finecke who was best known for having written Out of Africa.

This is advice I need to take to heart as I work on way too many projects and feel like the whole thing is about to wheel out of control at any second!