Mastering collaborative work practices is not easy for everybody, because the main principle, « sharing », is the opposite of what everybody is doing daily, « sending ». It’s why 18 years ago I created the slogan: « stop sending, start sharing »! In the Collaboration IndeX theory I’ve formalized, mastery path for adoption of collaborative work practices is quite simple in fact. There is 4 steps. 1/ being reactive: you react to collaborative actions initiated by other. 2/ being proactive. you are the one initiating collaboration. 3/ being structuring: you are organizing collaboration for yourself and the others ; 4/ being proactive+. You are initiating collaboration within structured places.