We love to keep things away from others. As a child, all of us have memories of how we warned our kid bro not to touch the new toy car that was given to us by a relative from the US. "You are too young for it", we justify.
And we come across many such lines of exclusion that are hurled at us. We tend to forget the ones we hurt the other person with. "You don't understand me at all.", "you stay out of this ok!"
These lines that we throw at others often prove to be the lines of separation between our hearts. And every friend lost, means a reason less to live.