摘要：
4One of the mosst significant barriers to people doing things in the world, to actually introducing change is that they underestimate their ability to bring about change.精英民主化“蝴蝶效应”“六度分离理论”《Pay It Forward》终身教授的例子降低期望带来的幸福感并不能延续太久问题并不在于我们的期望有多高。能影响我们幸福指数（levels of well-bing）的是我们的期望是否正确。错误的期望觉得，去某个特定的 阅读全文
