Flow

Csikszentmihalyi analyzed how a person enters the flow state, how one maintains flow (engaging in a task where the difficulty matches the ability), and the factors that cause one to leave the flow state — drifting toward other mental states of anxiety, relaxation, boredom, worry, arousal, etc. He was able to demonstrate that someone in flow loses a sense of self-consciousness: the activity is entirely rewarding in and of itself, as one gains a sense of personal control over the activity.
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