Evolution and anthropology alike furnish the truth that you and I are responsible for what we become. We have the power to control our experiences, and by using this power we have created circumstances necessary to our upward climb.
Some of us, unsure that we create our circumstances, are prone to think they are created by heredity, karma, or environment. We believe limitations come at us, rather than from us; but we all have power within us.
It all starts with our thoughts.