一、奋斗与行动类

1. "The trouble is not the task, but doing it."（问题不在于任务本身，而在于执行。）

2. "Better late than never. Just do it!"（迟到总比不到好，行动起来!）

3. "Don't wait for opportunity. Create it."（不要等待机会，创造它。）

二、信念与坚持类

4. "Believe you can and you're halfway there."（相信自己就能成功一半。）

5. "Our doubts are traitors, and make us lose the good we might have gained by faith."（怀疑是背叛者，让我们错失信仰带来的收益。）

6. "Success is not final, failure is not fatal: it is the courage to continue that counts."（成功不是终点，失败不致命，坚持才是关键。）

三、积极心态类

7. "There's light ahead. Don't look back."（前方有光，别回头看。）

8. "Carry the lamp rather than complain in the darkness."（提灯前行，而非在黑暗中抱怨。）

9. "Nothing is impossible! Even if the whole world denies me."（一切皆有可能!即使全世界都与我为敌。）

四、成长启示类

10. "The only limit to our realization of tomorrow will be our doubts of today."（实现明天的唯一限制是今天的怀疑。）

11. "Younger is not a disadvantage, but a privilege. The only thing we have to fear is fear itself."（年轻不是劣势，而是特权。唯一需要恐惧的是恐惧本身。）

12. "Things we cannot change, we accept. Things we can change, we do."（无法改变的接受，可以改变的去做。）

这些短句可根据具体场景灵活选用，建议配合行动激励使用效果更佳。