Ao ler um artigo do Duarte Grilo fui dar à descrição na wikipedia do que se entende por flow, no contexto da psicologia. Achei piada à relação que estabelecem com a espiritualidade.

Flow is the mental state of operation in which the person is fully immersed in what he or she is doing, characterized by a feeling of energized focus, full involvement, and success in the process of the activity.
[…]
For millennia, practitioners of Eastern religions such as Buddhism and Taoism have honed the discipline of overcoming the duality of self and object as a central feature of spiritual development. Eastern spiritual practitioners have developed a very thorough and holistic set of theories around overcoming duality of self and object, tested and refined through spiritual practice instead of the systematic rigor and controls of modern science.
[…]
In education, there is the concept of overlearning which seems to be an important factor in this technique, in that Csikszentmihalyi states in his book Flow: The Psychology of Optimal Experience that overlearning enables the mind to concentrate on visualizing the desired performance as a singular, integrated action instead of a set of actions.
[…]
The concept of “being in the zone” during an athletic performance fits within Csikszentmihalyi’s description of the Flow experience, and theories and applications of “being in the zone” and its relationship with athletic competitive advantage are topics studied in the field of sport psychology.

Os únicos momentos em que me senti neste estado foi ao programar, mas nunca tinha pensado na possibilidade de se passar pelo mesmo com outro tipo de actividade (o que aliás, faz todo o sentido).