Mihaly Csikszentmihalyi's Flow: The Big Five Traits Behind It
You have felt it even without naming it: the work takes over, the clock disappears, and you glance up two hours later with no sense of where they went. Mihaly Csikszentmihalyi named that state flow and spent a career on it. He described it in a 1996 Wired interview as a state where "Your whole being is involved, and you're using your skills to the utmost." The question personality asks is a narrower one: who actually gets there, and how often.
Flow is less about Openness than you would guess
The natural guess is that flow belongs to Openness, and the felt experience leans that way. Intellect (O5) is the appetite for absorbing, effortful mental work, the thing that makes a hard problem look inviting instead of tiring. But when Ullen and colleagues measured who slips into flow in daily life, the loudest signals sat elsewhere: flow-prone people scored high on Conscientiousness and low on Neuroticism, and the Openness link, while real, came in weaker. The appetite is Openness. The reliable access runs through two other places.
Self-Discipline (C5) is what carries you through the ugly first twenty minutes of a task, the stretch before it turns absorbing, which is exactly where low-C5 people quit and never reach flow at all. Low Neuroticism is the other half. Flow needs your attention pointed entirely outward at the task, and an anxious mind keeps spending that attention on itself instead, which is why people caught in an anxiety loop struggle to drop in even when the work is a perfect fit. The composer Csikszentmihalyi interviewed could vanish into the music because nothing was yanking his attention back to his own ego.
Csikszentmihalyi's book is still the definitive tour of the state itself. What a facet profile adds is the why behind your own access to it: whether your C5 gets you to the doorway, and whether your Neuroticism lets you stay once you are through.
Read the book: Flow: The Psychology of Optimal Experience by Mihaly Csikszentmihalyi.
See Where You Fall
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Research Citations
Csikszentmihalyi, M. (1990). Flow: The psychology of optimal experience. Harper & Row.
Ullen, F., de Manzano, O., Almeida, R., Magnusson, P. K. E., Pedersen, N. L., Nakamura, J., Csikszentmihalyi, M., & Madison, G. (2012). Proneness for psychological flow in everyday life: Associations with personality and intelligence. Personality and Individual Differences, 52(2), 167-172.
Nakamura, J., & Csikszentmihalyi, M. (2002). The concept of flow. In C. R. Snyder & S. J. Lopez (Eds.), Handbook of positive psychology (pp. 89-105). Oxford University Press.
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.