Pleasures of the mind are the greatest, those of honor are inferior, and the physical pleasures come last of all.
--Plato
This comes with practice and conntentment.

One may go wrong in many different ways, but right only in one, which is why it is easy to fail and difficult to succeed - easy to miss the target and difficult to hit it.
--Aristotle

There are three kinds of life, that of the lover of wisdom of which is actuated by a passion for truth; that of the ambitious which is actuated by a passion for honor and victory; and that of 'passionate' properly so called, whose main object is the gratification of physical desires and the accumulation of wealth required for that purpose which gives the most pleasure.
--Plato
Now think it over and over again which kind of life you would like to lead? Decide it now and make efforts to achieve your goal. You might have to repent for not making a choice earlier.

The joy of parents are secret and so are their grieves and fears.
--Francis Bacon (1561-1626)

It is better to suffer, wrong to do it.
--Gorgias
This is about wrong actions. It is based on the philosophy that everybody has his own Karm (actions) on his head, so why do you take any bad Karm on your head. Let others take it. You should always do good.

Love is an ideal thing, marriage a real thing; a confusion of the real with the ideal never goes unpunished.
-- Goethe

Mathematics is the language with which God has written the universe.
-Galileo Galilei, physicist and astronomer (1564-1642)