If readers of the character building project are serious about exploring an excellent answer to this question, I heartily suggest reading the above-cited article from Big Questions online. https://www.bigquestionsonline.com/2015/02/17/good-character-caught-taught/
If you do not have the time read the article, the quote below will offer “cliff notes.”
Some people believe that nature makes people good, others say that it is habit, and still others say that it is teaching. Experience shows that logical arguments and teaching are not effective in most cases. The soul of the student must first have been conditioned by good habits just as land must be cultivated to nurture seed…. Aristotle
I intend to further investigate the source, namely the Jubilee Centre for Character and Virtues.
The Jubilee Centre for Character and Virtues is a pioneering interdisciplinary research centre focusing on character, virtues and values in the interest of human flourishing. It promotes a moral concept of character in order to explore the importance of virtue for public and professional life. The Centre through its extensive range of projects contributes to a renewal of character and virtues in both individuals and societies.