In displaying the psychology of your characters, minute particulars are essential. God save us from vague generalizations! Be sure not to discuss your hero's state of mind. Make it clear from his actions. Nor is it necessary to portray many main characters. Let two people be the center of gravity in your story: he and she.
"Do you know," Ivan Bunin recalls Anton Chekhov saying to him in 1899, near the end of his too-short life, "for how many years I shall be read? Seven." "Why seven?" Bunin asked. "Well," Chekhov answered, "seven and a half then."
Satiation, like any state of vitality, always contains a degree of impudence, and that impudence emerges first and foremost when the sated man instructs the hungry one.
In order to cultivate yourself and to drop no lower than the level of the milieu in which you have landed, it is not enough to read Pickwick and memorize a monologue from Faust... You need to work continually day and night, to read ceaselessly, to study, to exercise your will... Each hour is precious.