You must trust and believe in people or life becomes impossible.
A hungry dog believes in nothing but meat.
There ought to be a man with a hammer behind the door of every happy man.
A woman can become a man's friend only in the following stages - first an acquantaince, next a mistress, and only then a friend.
Be sure not to discuss your hero's state of mind. Make it clear from his actions.
Then I feel so happy and at the same time so sad, it's unimaginable.