It’s difficult to get your creative juices flowing if you’re always being practical, following rules, afraid to make mistakes, not looking into outside areas, or under the influence of any of the other mental locks

It’s difficult to get your creative juices flowing if you’re always being practical, following rules, afraid to make mistakes, not looking into outside areas, or under the influence of any of the other mental locks (Roger Von Oech, A Whack on the Side of the Head: How You Can Be More Creative)