A trained mind is the cause of real happiness.
A well-guarded mind brings about happiness.
A person who acts on their impulse always has to regret.
A wise person always tames their restless mind.
A misdirected mind causes a worse destruction than a robber or an enemy.
Calm are the body and mind of a person whose concentration on the breaths has been made complete and well-cultivated.
A well-directed mind makes a person better than their parents or relatives can.
As the mountain of solid rock remains unshaken by the storm, so the wise person remains unmoved by praise or blame.
From Buddhist Proverbs - Cittavagga - Section of the Mind