Happiness is like a pebble dropped into a pool to set in motion an ever-widening circle of ripples.As Stevenson has said, being happy is a duty.
There is no exact definition of the word happiness.Happy people are happy for all sorts of reasons.The key is not wealth or physical well-being, since we find beggars, invalids and so-called failures, who are extremely happy.
Being happy is a sort of unexpected dividend. But staying happy is an accomplishment, a triumph of soul and character.It is not selfish to strive for it.It is, indeed, a duty to ourselves and others.
Being unhappy is like an infectious disease. It causes people to shrink away from the sufferer.He soon finds himself alone, miserable and embittered.There is, however, a cure so simple as to seem, at first glance, ridiculous；if you don’t feel happy, pretend to be！
It works. Before long you will find that instead of repelling people, you attract them.You discover how deeply rewarding it is to be the center of wider and wider circles of good will.
Then the make-believe becomes a reality. You possess the secret of peace of mind, and can forget yourself in being of service to others.
Being happy, once it is realized as a duty and established as a habit, opens doors into unimaginable gardens thronged with grateful friends.
-exact [ɪgˈzækt]adj.精密严谨的；确切的
典型例句
He measured it and found it to be the exact size.
他量了一下，发现正好是这个尺寸。
最常用法
be exact in work 工作一丝不苟
to be exact 确切地说
联想记忆
exactly adv.精确地；确切地；完全地；严密地；正是
-physical [ˈfɪzɪkl]adj.物质的；身体的；物理的
典型例句
The change of water from ice to vapor is physical.
水由冰变成蒸汽是物理变化。
最常用法
physical examination 身体检查
physical exercise 运动，体操
physical age 实际年龄，生理年龄
physical laws 自然法则
联想记忆
physically adv.身体上地；实际上
mental adj.思想的；心理的；精神的
mentally adv.精神上；智力上；心理上
-believe [bɪˈliːv]v.相信；认为
典型例句
I believed（that）you belonged to that company.
我相信你属于那家公司。
最常用法
believe in 相信；信任
believe it or not 信不信由你
联想记忆
believable adj.可相信的
unbelievable adj.难以置信的
disbelieve v.不信；怀疑
belief n.信念；信仰；相信
make-believe n.假装；假扮；幻想 adj.幻想的；假装的
trust n.信任；信托 vi.信任 vt.相信；委托
rely vi.依靠；信任
-forget [fəˈget]v.忘记；忽略
典型例句
I almost forget to pay the phone bill.
我几乎忘记交电话费。
最常用法
forget to do sth.忘记去做某事
forget doing sth.忘记做了某事
forget oneself in 沉浸于
Forget it.别放在心上。
联想记忆
forgettable adj.容易被忘的；可忘记的
recall vt.回想起
remember v.记得
快乐就像一块为了激起阵阵涟漪而丢进池塘的小石头。正如史蒂文森所说，快乐是一种责任。
快乐这个词并没有确切的定义，快乐的人快乐的理由多种多样。快乐的关键并不是财富或身体健康，因为我们发现有些乞丐，残疾人和所谓的失败者也都非常快乐。
快乐是一种意外的收获，但保持快乐却是一种成就，一种灵性的胜利。努力追寻快乐并不自私，实际上，这是我们对自己和他人应尽的责任。
不快乐就像传染病，它使得人们都躲避不快乐的人。不快乐的人很快就会发现自己处于孤独，悲惨，痛苦的境地。然而，有一种简单得看似荒谬的治病良方：如果你不快乐，就假装你很快乐！
这很有效。不久你就会发现，别人不再躲着你了，相反，你开始吸引别人了。你会发觉，做一块能激起涟漪的小石头有多么值得。
然后假装就变成了现实。你拥有了使心灵平静的秘密，会因帮助他人而忘我。
一旦你认识到快乐是一种责任并使快乐成为习惯，通向不可思议的乐园的大门就会向你敞开，那里满是感激你的朋友。