Final answer:
The statement that the keyword to putting first things first is discipline is true. Discipline means prioritizing important tasks and staying committed to achieving goals. It requires a systematic and structured approach with consideration of the actions' consequences.
Step-by-step explanation:
The keyword to putting first things first is discipline. This statement is true. Discipline involves prioritizing what is most important and maintaining the focus and consistency required to accomplish tasks. It involves a structured approach, where one must consider the consequences and requirements of their actions both before and after they undertake them.
As highlighted in the quote, to achieve something such as winning at the Olympics, one must engage in a rigorous preparation regime, much like following a strict diet or training schedule. It demands sacrifice and adherence to rules, akin to surrendering oneself to a physician or trainer. Similarly, in life, discipline is about setting rules for ourselves to achieve our goals.
Quotes such as "You are what you think" and "Looking at small advantages prevents great affairs from being accomplished" emphasizes the importance of discipline in shaping one's mindset and commitment to the larger goals over immediate gratifications. "Learn avidly. Question it repeatedly. Analyze it carefully. Then put what you have learned into practice intelligently" underlines the systematic approach imbued with discipline that leads to success.