I would assume "put in place" here means to cast aside.

Men in nature are born selfish. If a man want something then he will do anything in his power to acquire that even if he has to hurt anyone (not always physically hurt). What matters more is the outcome and the joy he gets after acquiring it.

Before getting married, a man must first learn to cast aside this selfishness and learn to put others wants first. This is the most important and the hardest thing to do as one needs to cast aside his own happiness for the sake of his future family.