It's all about setting boundaries, folks. When faced with a daunting task, just close your eyes, point your nose to the task list, and say, "I don't care about that." Repeat as necessary until the task list is manageable.
Example: Your boss asks you to do 10 things. You respond with, "I'll do 3 things, and they'll be good."
Link to Just Say No for more advanced techniques.
Link to Just Don't Care for more philosophical discussions.