Little by little, when we consciously engage in and deeply consider the rituals of Passover, (or Mitzvot of any kind) we will find ourselves becoming less motivated by the desires of our ego.
In every generation, each person must tell the Passover story as though she or he were personally liberated from Egypt. From slavery. Why are we required to retell this story, and to retell it as if we ourselves have experienced it?
Pesach is a time for restricting our actions in order to further the goals of the soul. We want to soar into outer space (metaphysically speaking), so we strap ourselves into the spaceship, and restrict ourselves considerably, in order to get there.