What is the impact of faith in Allah Almighty on a Muslim's life, psychological stability, contentment with what has been allotted to them, acceptance of calamities and seeking reward for them, and eagerness to please Allah, along with mentioning a Quranic verse for each impact?

Faith has a great impact on the believer, as they find a good life, psychological stability, and tranquility of heart. They also find contentment with what Allah has decreed for them and patience in times of calamity. Through faith, they become active in acts of obedience and keen on what Allah loves, knowing what Allah has prepared for the obedient and what He has threatened the disobedient with.