Mr.s Obama's family reflects my own upbringing in that she saw both successful people and not successful people throughout her childhood and learned something from each as she began to shape who she wanted to be. Because she had a home life that gave her the space to be observant and to reach her own conclusions about the personalities that surrounded her, she had the time to reflect on what she saw. She noticed the small lives of her aunt and uncle, as well as the uncle whose life was limited because of his distrust of anyone who wasn't black, the dentist, etc. She noted the lives of those who lived with more money and in better neighborhoods and decided she wanted that as well ... without letting the harder journey it would take to get there deter her from trying. She had parents who didn't raise her or her brother to look at the boulders in front of them, rather they taught them that life was often hard for people of color, but that was no excuse for not excelling anyway. I believe it was crucial that her parents had a stable relationship and while money was not always plentiful, they always had enough.
She held herself apart from her environment well enough to look at failure dispassionately rather than letting it decide how her life would go. In some ways she was lucky, in other ways, she decided the direction of her life.
I think the answer to the second question varies for different groups of people in different walks of life. Everyone has a part to play, but I think that at this point, a heavier burden sits at the feet of the people who would most benefit from adopting a mindset of taking every step to speak up for themselves, to take the opportunities placed in front of them, and most importantly, ignore the circumstances and the negative voices that would push them backwards or hold them down. There are a lot of people just like Mrs. Obama, with same background and experiences, who have quietly moved through life becoming more than what society tells them they can be. They may not have made the same blazing path nor were they gifted with public acknowledgment, but they have reached a level of success that makes them fulfilled. Those who have managed it need to be just like the mentors and advocates she encountered throughout her life and take the opportunity to pay it forward as she has.