Introduction. Much of life involves problem-solving of some sort. Many are routine, some take time, and others seem nearly impossible. The important fact is that we don’t solve them all, or, even worse, we offer ineffective or poor solutions. Most problem-solving books available suggest how to solve problems. In this brief essay, we discuss the barriers to solving a given problem. Here is a list of common "enemies" of problem-solving, also called the psychological, cognitive, and practical barriers that prevent us from effectively addressing and resolving them. These are drawn from psychological research and productivity insights. The List . Every problem solver should be aware of these barriers. Team leaders should monitor closely to prevent their team from falling for any of them, particularly #6 on confirmation bias and #8 about unnecessary constraints. 1. Lack of Knowledge or Information: Without sufficient understanding or data about the...