激励人心的正能量语句可以激发我们的动力，帮助我们克服困难并实现目标。以下是一些简短的英文正能量语句：

1. Believe in yourself and all that you are. Know that there is something inside you that is greater than any obstacle.

2. The only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle.

3. Success is not final, failure is not fatal: it is the courage to continue that counts.

4. Don't watch the clock; do what it does. Keep going.

5. You are never too old to set another goal or to dream a new dream.

这些语句都鼓励我们相信自己，坚持追求自己的梦想，并且不放弃。让我们用这些正能量语句来激励自己和身边的人，努力实现自己的目标！