We know only what we know. This sounds very simple and naïve but still it is a powerful statement. It also defines what we do not know, which is very important to realise as well. One could say that we limit our world and experiences by our awareness.
Learning new and being open to new opportunities and possibilities is not easy. This can be clearly seen from the above axiom, or just by looking around you and observing how the people you know carry on having their usual habits and routines—often unchanged for decades. As if this would not be enough to restrict and narrow our potential we do it also proactively, and others do it for us.
Imagine that you are faced with a new situation that is somewhat awkward or cumbersome. To whom will you tell about it? Quickly you scan through your friends and decide to share the information with people who can handle the news. In another words you do not bother upsetting the persons, who you feel with your past experience, would be shocked and would have hard time taking in the news. Everybody knows a relative or a person who is very uptight and square with his/her world-view. With those persons you are very careful how you put your words and what kind of issues are appropriate discussion topics. You filter your interaction and communication proactively, subconsciously.
So, who limits and what? Is it you or the rest of the world?