There is a need to say a few words about happiness.
Biologically speaking happiness is just a certain state of the brain, compared to other, less happy states. As a matter of fact, a number of hormones sometimes called "happy hormones" or "hormones of happiness" are known to science today. They include such hormones as Dopamine, Serotonin, Oxytocin and Endorphins. So it is not difficult to imagine a situation when you could chemically tweak the levels of these hormones in your brain and reach the true state of happiness without going into troubles of making any real changes to your life.
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