Alice laughed. "There is no use trying," she said: "one can't believe impossible things."
"I dare say you haven't had much practice," said the Queen. "When I was your age, I always did it for half an hour a day. Why, sometimes I've believed as many as six impossible things before breakfast."
by Lewis Carroll, Through the Looking Glass
For those who are overwhelmed by the shear amount of resources that are available to us and felt lost and immobilized, this is a good read to get unstuck: