Make an island of yourself, make yourself your refuge; there is no other refuge. Make truth your island, make truth your refuge; there is no other refuge.
Now this, monks, is the noble truth of suffering: birth is suffering, aging is suffering, illness is suffering, death is suffering; union with what is displeasing is suffering; seperation from what is pleasing is suffering... in brief, the five aggregates subject to clinging are suffering.
Beware of the anger of the body. Master the body. Let it serve truth. Beware of the anger of the mouth. Master your words. Let them serve truth. Beware of the anger of the mind. Master your thoughts. Let them serve truth.
A wrong action may not bring its reaction at once, even as fresh milk turns not sour at once: like a smouldering fire concealed under ashes it consumes the wrongdoer, the fool.
Peace comes from within. Do not seek it without. It can be argued that peace and happiness comes from the subjective internalised perspective of realizing things could be worse and being grateful they aren't. The alternative view that peace and happiness comes from the objective external perspective of having more and better things than at present, while important for growth, can be a never-ending source of jealousy, dissatisfaction and disappointment. A balance of the two, where people are grateful for what they have while striving for more seems the best blended perspective.