What are the steps of life in this world for a Muslim?

The first step for a Muslim is to correct and strengthen faith, then to know what Allah has commanded him to do and what He has forbidden him from doing, so that he may perform the former and avoid the latter. Following this is steadfastness upon it, as the Prophet (peace be upon him) said: "Say: 'I believe in Allah,' then be steadfast," and "What I have forbidden for you, avoid; and what I have commanded you to do, do of it as much as you are able." Steadfastness is an obligation and a necessity, especially in this era of divergent opinions. It is a source of strength and success for whoever adheres to it.