You get more of what you think about.

Your central nervous system is set up to support this. The reticular activation formation (some people call this the reticular activation system) in your brain helps you notice more of what you put your attention on.

If you recently purchased a green car, all of a sudden, you’ll notice green cars everywhere. If you or someone close to you is pregnant, you start to notice pregnant women everywhere. If you have a new tattoo, a diamond watch, a Chihuahua, or hay fever, you’ll notice it everywhere until your focus fades.