What does "look out world" mean here?

"By occasionally acting outside of the norm, you'll literally install new beliefs as your behavior alerts the Universe, life's magic, and your inner witness that things are changing. And if you repeatedly change your behavior, such as how you window shop for the skinnier, slimmer you, while also watching what you eat and choosing words that serve you, look out world!" ---- Mike Dooley Manifesting Change

What's the meaning of "acting outside of the norm" mean in the first sentence? Does it mean that do something unconventional?

What does "look out world" mean here? This is nore confusing.