Doing an essay and i chose jennifer lopez,and oprah winfrey.how should both conduct their lives.?

Im doing an essay on Ehrenreich points to the popularity of several"macho stars": Mel Gibson in the road warrior, and john travolta in saturday night fever, Marlon Brando in the wild one, and clint eastwood in anything. I chose jennifer lopez and oprah winfrey as positive role models on film and television and who i felt provide positive role models for both male and females. now i am stuck on the part where i have to write an essay on in which i use these characters as examples of the way that men and women should conduct their lives. Please help!!