Real happiness and peace can be found in submitting to the commands of the Creator and the Sustainer of this world. God has said in the Quran:

{Truly, in remembering God do hearts find rest.} [Quran 13:28]

{أَلَا بِذِكْرِ اللَّهِ ...

(61) (61) And to Thamūd [We sent] their brother Ṣāliḥ. He said, "O my people, worship Allāh; you have no deity other than Him. He has produced you from the earth and settled you in it, so ask forgiveness of Him and then repent to Him. Indeed, my Lord is near and responsive."

(62) (62) ...

(1) (1) O you who have believed, fulfill [all] contracts.[239] Lawful for you are the animals of grazing livestock except for that which is recited to you [in this Qur’ān] - hunting not being permitted while you are in the state of iḥrām.[240] Indeed, Allāh ordains what He intends.

[239]- ...

(1) (1) [All] praise is [due] to Allāh, who created the heavens and the earth and made the darkness and the light. Then those who disbelieve equate [others] with their Lord.

(2) (2) It is He who created you from clay and then decreed a term[291] and a specified time [known] to Him;[292] then ...

(1) (1) [This is a declaration of] disassociation, from Allāh and His Messenger, to those with whom you had made a treaty among the polytheists.[461]

[461]- But who had violated it.

(2) (2) So travel freely, [O disbelievers], throughout the land [during] four months but know that you cannot ...

(101) (101) And when you travel throughout the land, there is no blame upon you for shortening the prayer,[215] [especially] if you fear that those who disbelieve may disrupt [or attack] you.[216] Indeed, the disbelievers are ever to you a clear enemy.

[215]- The four rakʿah prayers are ...

(104) (104) And Moses said, "O Pharaoh, I am a messenger from the Lord of the worlds

(105) (105) [Who is] obligated not to say about Allāh except the truth. I have come to you with clear evidence from your Lord, so send with me the Children of Israel."[391]

[391]- i.e., free them from ...

(60) (60) Zakāh expenditures are only for the poor and for the needy and for those employed for it[487] and for bringing hearts together [for Islām] and for freeing captives [or slaves] and for those in debt and for the cause of Allāh and for the [stranded] traveler - an obligation [imposed] ...

(57) (57) O you who have believed, take not those who have taken your religion in ridicule and amusement among the ones who were given the Scripture before you nor the disbelievers as allies. And fear Allāh, if you should [truly] be believers.

(58) (58) And when you call to prayer, they take ...

(1) (1) They ask you, [O Muḥammad], about the bounties [of war]. Say, "The [decision concerning] bounties is for Allāh and the Messenger." So fear Allāh and amend that which is between you and obey Allāh and His Messenger, if you should be believers.

(2) (2) The believers are only those ...