Hawzah News Agency (Qom, Iran) - According to the Qur'an, man gains his happiness only from God, and it is He who fills all the gaps in his
life, and satisfies him. The Qur'an says:
 

“Those who have faith and their hearts are tranquil in thinking of God, know that all hearts find peace by remembering God.”(13:28)
 

Only God brings repose to the anxious and inquisitive hearts of man. Other things are subsidiary and preliminary matters, not the final stage. The same is said of worship:
 

“To remember God, pray.” (The Qur'an: 20:14)
 

Also, the following verse says:
 

“Prayer checks wickedness and injustice, and remembering God is more important.”(The Qur'an:29:45)
 

Islam thinks of man as created to worship God, to seek proximity to Him and to know Him, all of which give him power. But knowledge and power are not the ultimate goal, nor is self-purification.

Reference:
Ayatullah Murtadha Mutahhari, Goal of Life, Published by Bethat Islamic Research Centre (BIRC) Qom – Iran.