Every character needs to serve a function. How do you determine the function of a character? There are different types of characters throughout your story. The protagonist which is your hero. The antagonist who provides the opposition to the hero. A love interest pretty obvious right? A close friend who knows all the fears and secrets of the hero and can provide guidance in hard times.
www.ted.com/talks/young_ha_kim_be_an_artist_right_now.html www.brainpickings.org/index.php/2013/05/20/bill-watterson-1990-kenyon-speech/ E. B. White - “A writer who waits for ideal conditions under which to work will die without putting a word on paper.”