The way you think and your emotions is known, without a doubt, to cause problematic releases of serotonin, norepinephrine, etc. So it's possible that you developed anxiety first, and your chemical imbalances were the result.
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Tens of millions of dollars have gone into the development of the Xbox One controller and hundreds of mockups were created in order for Microsoft to nail the perfect design of the Xbox One controller, without throwing out the so much loved Xbox 360 design.