David A. Clark's Overcoming Paralyzing Doubt and Indecision (C6)
David A. Clark is a cognitive therapist who has spent his career on the anxious mind, and Overcoming Paralyzing Doubt and Indecision is his workbook for people who cannot get unstuck, who turn every choice over so many times that the turning becomes its own trap. His aim is to separate the ordinary doubt that keeps us careful from the runaway doubt that freezes us. In his Psychology Today column he offers the goal: "Being at peace with your doubts is an important contributor to a satisfied, fulfilled life." How much you weigh and reconsider before you act is, in the Big Five, one facet.
Weighing before you act is the Cautiousness facet
That facet is Cautiousness (C6), under Conscientiousness, how much you deliberate and consider consequences before committing to a course. A high scorer thinks things through and rarely leaps; a low scorer decides quickly and adjusts on the move. Careful deliberation is a real strength, and most high-C6 people use it well. Clark writes for the version that has tipped over, where the weighing never resolves and doubt keeps demanding one more check before you can move. This post is about the trait rather than a diagnosis, and the workbook is a set of skills, not a substitute for treatment.
What tips careful deliberation into paralysis is usually Anxiety (N1), specifically a low tolerance for uncertainty, the sense that you cannot act until you are sure and you are never sure. Clark's move is to let the doubt exist without obeying it, to make a good-enough decision while the uncertainty is still in the room. He is careful to protect healthy doubt, the kind that flags a real risk, while teaching you to stop feeding the excessive kind with endless reassurance. The skill is acting before the certainty arrives, since for many decisions it never will.
For a reader placing themselves, your C6 is a fair read on how long you deliberate and whether that care serves you or stalls you. High on it and Clark's workbook helps you keep the wisdom of looking before you leap without letting doubt run the show. Low on it and the book is a window into why some people agonize over choices you would make in a second. Where you sit on Cautiousness tells you how much weighing stands between you and action, and we take the facet apart in Cautiousness (C6).
Read the book: Overcoming Paralyzing Doubt and Indecision: A CBT Workbook to Conquer the Fear, Uncertainty, and Anxiety That Keep You Stuck by David A. Clark.
See Where You Fall
Where do you actually fall? The 30-facet OCEAN personality test takes about 15 minutes and scores all five domains and the facets underneath them. Take the test
Research Citations
Clark, D. A. (2026). Overcoming paralyzing doubt and indecision: A CBT workbook to conquer the fear, uncertainty, and anxiety that keep you stuck. New Harbinger Publications.
Carleton, R. N. (2016). Into the unknown: A review and synthesis of contemporary models involving uncertainty. Journal of Anxiety Disorders, 39, 30-43.
Johnson, J. A. (2014). Measuring thirty facets of the Five Factor Model with a 120-item public domain inventory: Development of the IPIP-NEO-120. Journal of Research in Personality, 51, 78-89.
Costa, P. T., & McCrae, R. R. (1992). Revised NEO Personality Inventory (NEO-PI-R) professional manual. Psychological Assessment Resources.