Final answer:
The theory in question that aligns with giving 100% effort and expecting success is that hard work pays off in the end, a notion deeply embedded in the ethos of the American Dream.
Step-by-step explanation:
The theory mentioned in the quote about giving 100% all the time is the belief that hard work pays off in the end. This concept is rooted in the American Dream and the idea that dedication and effort can lead to success and personal excellence. The quotes provided discuss the importance of starting early to maximize chances of success, suggest that hard work is often seen as its reward, and imply that adopting a proactive mindset in the face of challenges can lead to accomplishing one's goals. Additionally, the quotes highlight the value of having the will to win and optimism as essential components of taking on long-term ambitious undertakings. It's important to note that while hard work is often celebrated, external factors such as the state of the economy and one's starting point also play a significant role in one's ability to succeed. For example, the 2008 recession showed that despite hard work, many people faced unemployment and the shattering of the American Dream.