以下是一些有關動力的英文佳句：
1. "The key to success is not just having the motivation to pursue your goals, but also having the perseverance to keep going when things get tough."
2. "Motivation is like a fuel for the mind, giving it the energy it needs to push forward and achieve success."
3. "Without motivation, it's easy to become complacent and lose momentum, which can be fatal in the fast-paced world we live in."
4. "A positive mindset and a strong sense of purpose can be a powerful source of motivation that drives us to accomplish great things."
5. "The secret to overcoming obstacles is not necessarily having more strength or resources, but rather having the right motivation to push through and prevail."
6. "Success is not achieved overnight; it's a result of consistent effort and sustained motivation that requires perseverance and discipline."
7. "A strong work ethic and a sense of purpose are essential for creating the kind of momentum that propels us towards our goals and helps us reach our full potential."
8. "Our level of motivation determines our level of success, so it's vital to find what ignites that fire within us and to nurture it with consistent effort and focus."
希望這些句子能幫助到您。