Some psyvhology into our everyday behavior

Today I went with my brother for a nature walk. My brother comes for a few weeks every few months away from the hustle bustle of his CEO existence to be with the family and enjoy the quiteness of USA. On our walt, I was constantly talking about one or other things. At the end of our small walk, we came to small cottage where my brother stopped me and commented that I have a rather restless existence these days. It is almost as I am not in the moment and somewhere else, solving issuees, worrying about things not done or bragging about new devices/knowledge etc. It was sharp insight in my state of being and thought process. Not pleasant but true. He further commented that he has gone through the same, and had some learnings from movie "dead poets society". In the movie, some poets meet in a cave to share poem among a tightly knit community and kept the poems within their group. He said that before telling everyone about new knowledge and stuff, we should keep it to ourselves for a certain period of time. Slowly we loose interest in most of that information, what remains is the true things we are interested in. When we restrain ourself from instantly sharing every worry or brag about every excitement to the person next to us, we do not victims of people expectations and drive our lives ourself. To illustrate the above point, he gave the example of one experiment by students of a psychology class. Students frowned when the teached wrote on the left side and looked pleased when teached wrote on the right side. In few days, the teacher was conducting most of the class writing right side of the blackboard. The feedback of the student has subconciousely changed the behavior of the teacher. This is how our behavior is changed by the feedback of people we surround ourselve with. We constantly seek feedback from others subconciousely and if we are not watchful of our thought process or define who weinteract with, we change ourselves.