Don Juan assured me that in ...

Don Juan assured me that in order to accomplish the feat of making myself miserable I had to work in the most intense fashion, and that it was absurd. I had now realized I could work just the same in making myself complete and strong. \
Don Juan assured me that in order to accomplish the feat of making myself miserable I had to work in the most intense fashion, and that it was absurd. I had now realized I could work just the same in making myself complete and strong. "The trick is in what one emphasizes," he said. "We either make ourselves miserable, or we make ourselves strong. The amount of work is the same.

Quotes from the same author

The trick is in what one emphasizes. We either make ourselves miserable, or we make ourselves happy. The amount of work is the same.
“We choose whether to be warriors or to be ordinary.”
“A warrior seeks to act rather than talk.”
“A warrior lives by acting, not by thinking about acting, nor by thinking about what he will think he has finished acting.”
“A warrior never worries about his fear.”