原文中文
当人感到开心时，体内会发生奇妙的变化，从而获得源源不断的新动力和力量。然而，不要总是试图在自身之外寻找快乐。真正让你开心的事情不在别处，就在你自己身上。因此，学会找出自身的情绪高涨期，并以此不断激励自己。
The true source of joy lies not elsewhere, but within oneself.
快乐的真正源泉不在别处，而在自己内心。
该句使用了'not elsewhere, but within oneself'这一并列结构，通过对比强调了内在与外在的区别。
When a person is happy, remarkable changes occur within their body, generating a fresh surge of motivation and strength. However, one should not constantly seek happiness from external sources. The true source of joy lies not elsewhere, but within oneself. Therefore, it is essential to identify periods of emotional high and use them to continuously inspire and motivate yourself.
当人感到开心时，体内会发生奇妙的变化，从而获得源源不断的新动力和力量。然而，不要总是试图在自身之外寻找快乐。真正让你开心的事情不在别处，就在你自己身上。因此，学会找出自身的情绪高涨期，并以此不断激励自己。