You must be present to win. I cannot claim authorship of this phrase because it hangs prominently in many casinos around the world. The intent of this message is to remind the bettor that he or she must be at the table when winnings are declared. To be absent is to forfeit one's gains. This, I think, is a useful reminder to students in the classroom, and to executives generally.
Life carries many distractions.
To lose focus can bring a large cost. So stay focused. To observe passively is a hard way to learn in the classroom, or to influence organizations.