The thing that would make a person better is making attempts at focusing on one's character development. When one's character is honed and developed on a continuous basis then that makes a person better over time. A person, in my opinion, is only better when that person's character is stronger and fully developed. In addition, I believe that a person ethnicity or gender does not make a person better or improve that person in any way.
A person develop his or her character by reading self improvement books, listening to self improvement tapes, and watching self improvement videos. All of this material already easily available online. If someone improves his character, such as learning to be more persevering or having more integrity, then those personal improvements will ensure that he becomes more successful in life. When one is successful because of character development then that, of course, will make him better.