Follow the System of Allah that the Messenger has established. That is how you will achieve the development of your "Self". A benevolent society helps you to grow like a mother's womb nourishes the embryo
And obey Allah and the Messenger, that you may be shown mercy. And hasten to the for-giveness of your Lord and to a Paradise as vast as the heavens and the earth, prepared for the God-fearing who spend in the way of Allah both in plenty and hardship, who restrain their anger, and forgive others. Allah loves such good-doers."
Ali Bakhtiari Nejad
And obey God and the messenger so you may receive mercy