A Simple Test To Guage Flow!
But how can we know if we’re truly operating in our ideal niches, whether in trading, 
romance, or careers? It turns out that there is a very simple psychological test that can provide this information.
Keep a journal of your emotional experience: how you are feeling at the end of your mornings, afternoons, and evenings. Make particular note of the number of occasions in which you were totally absorbed in what you were doing–so much so that you lost your sense of time passing and lost your awareness of yourself. Also make note of occasions in which you felt frustrated for any reason.
The result of your psychological test is simply the ratio of occasions in which you are absorbed to occasions in which you are frustrated. It turns out that highly creative, productive, and successful individuals have an unusually high ratio.
The reason for this is that these successful people are operating at that nexus of interests, talents, and skills. Because they’re doing what they love and have the resources to do it well, they become wholly absorbed in their experience. This is the “flow” state described by Mihalyi Csikszentmihalyi: a pleasurable, altered state of consciousness, in which we feel at one with our situation.
During frustration, on the other hand, we are either doing something that doesn’t interest us or something for which our skills and talents are poorly matched for the demands of the task. If task demands are too easy, we become frustrated with boredom. If task demands are excessive, we become frustrated by our inadequacies. Frustration divides subject and object; in flow, those are joined. It’s the difference between a highly satisfying sexual experience and a highly unsatisfying one.
If you’re operating in your proper niche, you will be experiencing a state of flow on a regular basis. You will be doing what you do well, and you will love and value what you’re doing. That is true for the job you’re in, the marriage you’re in, and the trades you’re in. That psychological test applies to most of life’s arenas.