Negative energy zaps our strength. It's in every facet of our lives more so than ever before. We are subject to so much information, mostly negative, and so many stressed out people transmitting negative energy (they just need some good coaching). And all of it draining our precious energy.
My sister mentioned how helpful avoiding negative energy is during her day. We can all do it. Start with just being aware of what drains you. For instance, I don't watch the news any more, don't miss it, and the world goes on without me - shocking I know.
Start right now. It's difficult to give things up, but you'll learn to love it.