自律和励志是成功的关键因素。当我们有自律时，我们可以更好地控制自己的生活，做出更好的决策，实现我们的目标。而当我们保持励志，我们可以在困难时保持积极的心态，坚持不懈地追求自己的梦想。以下是一些简短的英文短句，可以帮助我们保持自律和励志：

1. Discipline is the bridge between goals and accomplishment. 自律是实现目标的桥梁。

2. You don't have to be great to start, but you have to start to be great. 你不需要很伟大才能开始，但你必须开始才能变得伟大。

3. The only way to do great work is to love what you do. If you haven't found it yet, keep looking. 做出伟大的工作的唯一方式是热爱自己的工作。如果你还没有找到它，那就继续寻找。

4. Success is not final, failure is not fatal: it is the courage to continue that counts. 成功不是终点，失败也不是致命的：坚持不懈才是最重要的。

5. Believe you can and you're halfway there. 相信你自己，你已经成功了一半。

6. Don't watch the clock; do what it does. Keep going. 不要看时钟；要像它一样，继续前行。

7. If you want to achieve greatness, stop asking for permission. 如果你想取得伟大的成就，就不要再寻求别人的许可。

8. Your only limit is the amount of action you take. 你的唯一限制就是你采取的行动数量。

9. Dream big, work hard, stay focused, and surround yourself with good people. 做大梦想，努力工作，保持专注，和好人为伍。

10. The future belongs to those who believe in the beauty of their dreams. 未来属于那些相信自己梦想美好的人。