Be very, very humble (Ethics of the Fathers 4:4).
Rabbi Raphael of Bershed complained bitterly to his teacher, Rabbi Pinchas of Koretz, that he was unable to eradicate feelings of vanity.
Rabbi Pinchas tried to help him by suggesting different methods, but Rabbi Raphael replied that he had already tried every one without success. He then pleaded with his mentor to do something to extirpate these egotistical feelings. Rabbi Pinchas then rebuked his disciple. "What is it with you, Raphael, that you expect instant perfection? Character development does not come overnight, regardless of how much effort you exert. Eradication of stubborn character traits takes time as well as effort. Today you achieve a little, and tomorrow you will achieve a bit more.
"You are frustrated and disappointed because you have not achieved character perfection as quickly as you had wished.
"Continue to work on yourself. Pray to God to help you with your character perfection. It will come in due time, but you must be patient."
The Talmud states, "Be very, very humble," to indicate that true self-betterment is a gradual process. We achieve a bit today, and a little more tomorrow.