If you know Allah and worship Him, you will have found happiness and peace. Even if you are living in a hut made of mud.
But if you deviate from the true path, your life will truly be wretched, even if you are living a life of luxury and comfort in a large mansion. If this latter case applies to you, then you do not have with you the key to happiness.
And we gave him of the treasures, that of which the keys would have been a burden to a body of strong men. (Qur'an 28: 76)
Pause to reflect
Truly, Allah defends those who believe. (Qur'an 22: 38)
In other words, He protects them from evil, both in this world and in the Hereafter. In this verse, Allah enlightens us, warns us, and gives us glad tidings. He repels evil from the believers in proportion to their faith. The evil of the disbelievers, the evil whispers of the Devil, the evil in their own selves, and the evil of their deeds - all of these does Allah ward off from the true believers.
When calamity falls, its burden will be lightened from them. Every believer has a share in this divine protection. Yet it varies according to one's level of faith: some will receive less, others more.
Among the fruits of faith is that it gives solace to the believer in times of hardship.
... And whosoever believes in Allah, He guides his heart... (Qur'an 64: 11