The Mind at Peaceful Rest:

We should devote more time to humble, earnest prayer to God, for wisdom to bring up our children in the nurture and admonition of the Lord. The health of the mind is dependent upon the health of
the body. In Christ you will obtain strength and hope, and will not be troubled with restless longings for something to divert the mind and satisfy the heart. You have found the Pearl of Great Price, and the mind is at peaceful rest. Your pleasures are of a pure, elevated, heavenly character. You have no painful reflections, no remorse. Such pleasures do not enfeeble the body or prostrate the mind, but give health and vigor to both. The inhabitants of heaven are perfect, because the will of God is their joy and supreme delight.

- Ellen White - Mind, Body, and Personality: Volume 2