The only way to change behavior is through manipulation of reinforcement contingencies.

Confidence isn't optimism or pessimism, and it's not a character attribute. It's the expectation of a positive outcome.

写作是为沉默者发声，让不可见的事物显现。

解释：曲子高妙，不是人人都能和唱；说出真相，不是人人都能相信。

The word was my country, and of that I was deprived.