How does Meditation help in subduing the Ego?

Through meditation , the play of the mind is witnessed .In the early stages nothing more can be done that to gain understanding as the ego is observed constantly asserting itself .But in time its games become familiar , and one begins to prefer the peace of contentment .When the ego is subdued , energies can then be utilized constructively for personal growth and the service of others .

Swami Vishnu devananda from the book "Meditation & Mantras" pg. 4