It has been said to learn something from someone who is already experienced but sometimes we do not understand that. Following are certain advice given from the best expert, I am to a large extent fully convinced. It is also good to live a practical life and consider the most political aspect of your decision that what worst could happen if you make X decision and would you be able to cope up with that loss or gain? 
 

By all means, marry. If you get a good wife you will become happy, and if you get a bad one you will become a philosopher. –Socrates (470-399 B.C.)

Seeing a woman all dressed up for a trip to the city, Socrates remarked, “I suspect that your trip is not to see the city, but for the city to see you.
–Socrates (470-399 B.C.)

No better thing befalls a man than a good wife, no worse thing than a bad one. Semonides of Amorgos

The kind of events that once took place will by reason of human nature take places again. –Thucydides
 
We hang the petty thieves and appoint the great ones to public office –Aesop (~550 BC)Appearances often are deceiving.
In union, there is a strength. –Aesop

Never trust the advice of a man in difficulties. –Aesop

Be content with your lot; one cannot be first in everything –Aesop

We often despise what is most useful to us. –Aesop

He that is neither one thing nor the other has no friends. –Aesop

Wealth unused might as well not exist –Aesop

One word frees us of all the weight and pain of life: that word is love. –Sophocles

 
We cannot learn without pain.  –Aristotle
 
Misfortune shows those who are not really friends. –Aristotle
 
Only the dead have seen the end of a war. –Plato
 
Each man is capable of doing one thing well. If he attempts several, he will fail to achieve distinction in any. –Plato
 
Good people do not need laws to tell them to act responsibly, while bad people will fin d a way around the laws. –Plato
 
To be at once exceedingly wealthy and good is impossible. –Plato (c. 428-348 BC)
 
The price of apathy towards public affairs is to be ruled by evil men. –Plato

First secure an independent income, then practice virtue. –Greek Proverb

Asked once how far Sparta’s borders stretched, Agesilaus brandished his spear, and said, “As far as this can reach.”
There’s nothing certain in man’s life except this: That he must lose it. Aeschylus

No one ever creates anything great without a dash of madness. –Aristotle