Young men of the Aaronic Priesthood, the purpose of Fulfilling My Duty to God is to help you experience the power, authority, and divine mandate you received when the priesthood was conferred upon you. The Lord has said that "men should be anxiously engaged in a good cause, and do many things of their own free will, and bring to pass much righteousness; for the power is in them" (D&C 58:27–28).
Duty to God helps you exercise this power by taking the initiative to serve others, including your family, and to magnify all of your priesthood duties. More importantly, Duty to God helps prepare you to receive the Melchizedek Priesthood, make sacred covenants and receive temple ordinances, serve honorable full-time missions, and become righteous husbands and fathers.
Fulfilling your Duty to God is not a program but a process. As you participate in Duty to God, you learn about what God expects of you and make plans specific to your own feelings and circumstances. As you act on your plans, you gain a testimony and learn from your experiences. You then share what you are learning with your family, quorum members, and others. As you make and implement your plans, you learn how to express your feelings and take personal responsibility for your own spiritual growth and development.