正能量本是物理学名词，而正能量的流行源于英国心理学家理查德怀斯曼的专著《正能量》，其中将人体比作一个能量场，通过激发内在潜能，可以使人表现出一个新的自我，从而更加自信、更加充满活力。正能量指的是一种健康乐观、积极向上的动力和情感。当下，中国人为所有积极的、健康的、催人奋进的、给人力量的、充满希望的人和事，贴上正能量标签。它已经上升成为一个充满象征意义的符号，与我们的情感深深相系，表达着我们的渴望，我们的期待。
例句
1.Although scenery behind career and family each have malaises, but optimistic she face actively, full of positive energy.
虽然风光背后事业和家庭各有隐忧，但乐观的她积极面对，充满正能量。
2.It does mean that you will have the conscious awareness to change the negative to a positive and allow that positive energy to shape your life as opposed to being influenced by the negative.
这意味着你能够有意识地将消极思想转变为积极思想，并让积极的正能量来塑造你的生活，让你的生活摆脱消极的影响。
正能量10句格言，关于勇气和梦想
1. You may not control all the events that happen to you, but you can decide not to be reduced by them.
你可能不能控制所有发生在你身上的事，但是你可以决定不被它们所累。
2. Everything will change. The only question is growing up or decaying.
每件事都会变，问题在于前进还是后退。
3. Be the heroine of your life, not the victim.
做人生的主角，而不是受害者。
4. We spend most of our lives cutting down our ambitions because the world has told us to think small. Dreams express what your soul is telling you, so as crazy as your dream might seemeven to youI dont care: You have to let that out.
我们一生中的大部分时间都在缩小壮志雄心，因为这个世界告诉我们别想的太大。梦想表现了灵魂告诉你的事，所以即使你的梦想对你自己来说也是天方夜谭，也没有关系：你必须释放自己的梦想。
5. As long as we dare to dream and dont get in the way of ourselves, anything is possible--theres truly no end to where our dreams can take us.
只要我们敢梦想，并不被自己所阻，一切都有可能梦想无止境。
6. You have to speak your dream out loud.
你要大声说出自己的梦想。
7. Its not about how to achieve your dreams. Its about how to lead your life. If you lead your life the right way, the dreams will come to you.
如何实现梦想并不是关键，关键在于如何生活。如果你将自己的生活带入正确方向，梦想终会实现。
8. If you cannot hear the sound of the genuine in you, you will all of your life spend your days on the ends of strings that somebody else pulls.
如果你听不见内心真实的声音，你一生的时间都会花在别人要求你做的事情上。
9. When youre always trying to conform to the norm, you lose your uniqueness, which can be the foundation for your greatness.
当你总是想依循旧例时，你就失去了自己的独特之处，而独特就是成就你伟大的基础。
10. Courage is the most important of all virtues, because without courage, you cannot practice any of the other virtues consistently.
勇气是所有品质中最重要的。因为没有勇气，你就无法去保持其他的品质了。