What is the best message a Muslim can set for himself to live by and for its benefit to be far-reaching?

Man's mission in life is to worship his Lord and establish servitude to Him. The best deed that benefits a person and others varies from one individual to another, according to their abilities. The Prophet, peace and blessings be be upon him, answered those who asked about the best deed with different answers, due to the different circumstances of the questioners. All deeds that the Ummah needs and that benefit it are good, and a person is rewarded for them if he purifies his intention for Allah. Among the best of these deeds is seeking knowledge and teaching it to people, as the Prophet, peace and blessings be upon him, said: "Whomever Allah wishes good for, He grants him understanding in religion."