The most impressive sentence from the book called "In praise of wasting time" which I read in Vancouver during the time I was feeling spending no productive days.

 This sentence was quite sensational to me.

Through my life experience, I did play sports all the time.
And I thought the only way to get satisfaction was to win.

So I sticked to win and always battled to others.

But from this sentence, I realized that we can feel happiness without winning or beat enemies. 

Do not need to compare with others or be superior.

Just concentrate my life and go my way.