Be Happy
Merely living longer is not worth doing unless it is an enjoyable experience.Rule ten is that you should smile and feel happier in life.
Research from the Netherlands showed that older men with an optimistic outlook on life were only half as likely to suffer from cardio-vascular disease as those whose world view was more negative.
快乐
如果生活中无乐趣可言，单一的长寿也毫无意义。第十条长寿法则建议人们微笑，更加快乐的面对生活。
荷兰一份研究表明，与悲观的老人相比，持乐观生活态度的老人患心血管疾病的几率要减少一半。