In order to be less egoistical, one has to control his/her reptilian brain and to neutralize the animal and egoistical drives. This process frives us to become a “better” person: less wild and more human. Less egoistical and more altruistic. Less materialistic and more spiritual.
This transformation is called the “Essential Evolution”. This is so to say an inner evolution/transformation which focuse on the process of soul-making and away from all the appearances.