
More goodies from Seligman's Authentic Happiness
H = S + C + V
H: your enduring level of happiness
S: your set range
C: circumstances of your life
V: factors under your voluntary control
This post focuses on C, circumstances such as religion, wealth, health etc.. and it's impact on your happiness.
Seligman, the once-president of the American Psychological Association, has surveyed the surveys and this is a summary:
If you want to lastingly raise your level of happiness by changing the external circumstances of your life, you should do the following:
As far as happiness and life satisfaction are concerned, however, you needn't bother to do the following:
...
Together, circumstances account for no more than between 8 and 15 percent of the variance in happiness.
If you are skeptical, please read the book before passing judgment, it's in your best interests.

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