A man can refrain from wanting what he has not and cheerfully make the best of a bird in the hand.
Seneca the YoungerNo one can lead a happy life, or even one that is bearable, without the pursuit of wisdom, and that the perfection of wisdom is what makes the happy life, although even the beginnings of wisdom make life bearable. Yet this conviction, clear as it is, needs to be strengthened and given deeper roots through daily reflection; making noble resolutions is not a important as keeping the resolutions you have made already.
Seneca the YoungerThere is nothing which persevering effort and unceasing and diligent care cannot accomplish.
Seneca the Younger