The letter should be from someone who legitimately knows you. Preferably, the letter is from a current or former boss, a teacher, business leader, professional, or a respected member of the community. Letters from family members (and clergy) are generally viewed with suspicion by the prosecutors, but sometimes they can be powerful (if they appear to be objective about your character – not just letters from someone who loves you). If you can’t think of anyone that would help, ask your family/friends if they know someone that would be willing to meet you and get to know you. Remember, court cases take a long time. There is time for you to meet someone and impress them with your character. If you still can’t figure out who to ask, volunteer at a non-profit organization for 10 hours and ask the manager to write a brief note about how hard you worked.