Teach them Krishna Conscious Art at early age, so they may advance in devotional Service.
It is true that by practicing restraint of the senses by the yoga system one can get relief from the disturbances of desire and lust, but this is not sufficient to give satisfaction to the soul, for this satisfaction is derived from devotional service to the Supreme Personality of Godhead. — Srimad Bhagavatam, 01.16.35.
The Kingdom of Godhead is not a myth but it is situated far beyond the boundary of the material cosmos and one can know it by the process of devotional service only.
Whatever devotional service we may have, we do it for seeking the shelter of the Lord, not for our mental or physical enjoyment.
By rendering devotional service unto the Personality of Godhead, Sri Krishna, one immediately acquires causeless knowledge and detachment from the world.