Who decides for me?

A columnist tells a story that accompanied a friend to a newsstand. The friend greeted kindly journeyman, but in return received a rude and rough treatment. Picking up the newspaper that was thrown in his direction, the friend of the columnist smiled politely and wished a good weekend to journeyman. When the two friends came down the street, the columnist asked: - He always treats you so rude? - Yes, unfortunately it was always so ... - And you are always so polite and friendly with him? - Yes, I try to be. - Why are you so polite as he is so unfriendly to you? - Why do not you want him to decide how I should act. We decide how we act and react - not the other!