Seek out someone who knows you very well and can give explicit information on your performance, potential, and strengths. Discover references from your personal life, professional arena, or through your community works. Good choices will be a supervisor, a client, or community leader. Your recommender should not be a family member, someone from upper management, or a friend except in cases in which they have an alumnus relationship with the school to which you are applying. These choices are either too personal or too impersonal, neither possess an ability to supply the information that an admissions committee is looking for, which is quantifiable facts about you as a leader.