We all learn from experiences. Teachers, counselors, our parents, friends, relatives and every other person we communicate with have their own experience which they share with us. Hence we also learn from their experiences. Every person no matter how he lived, where he studied, what work he did gives us a message.
The thing is very simple if a person exists he will have experiences and experiences whether good or bad teach us something. So the more we socialize the more learned we become. Now since we exist we ought to have experiences and when we have experiences we learn from them. These learning's shape our life. And the life we lead is what others observe. So every moment, our every action, our every experience is a lesson for someone we might even not know. A student judges a teacher for how he/she teaches, the same way people judge us by the lessons we convey.
We don't convey these messages intentionally but every second our every move delivers a message. The way we dress, the way we carry ourselves, the way we walk, talk and act, every bit matters. They are all part of our message.
So, we must be the change we wish to see in the world. Our attitude towards others is what defines others attitude towards us. In order to live our dream, in order to be the person we want to be it is very important to pass the message on which we want our life to be defined.