When you open your heart to positivity, you open your mind to possibilities.

The psychologist must avoid all forms of mental chemistry.

I don't think about the past, I just think about the future.

【讲解】：发奋时候竟忘记吃饭，快乐时候就忘记了忧愁，把自己就要老了这件事也不放在心上，如此罢了。”