[92:7] We will direct him towards happiness.

Everyone's No.1 Desire in the world: To be Happy.
If we ask anyone in our lives, what is the most important thing that they are looking for? They will most probably answer, “Happiness”. Everyone that we know is looking for lasting and true happiness, which seems so elusive. Most people have experienced fleeting moments of joy that seem to fade away so quickly. Most people look for this true and lasting happiness in transient areas like relationships, money, power, fame, and the number of followers and likes on Instagram or Twitter. But, like all of us have experienced at some time or another in our own lives, looking for happiness in the wrong places is unfulfilling. 

Happiness is an exclusive quality of the soul.If we worship God alone, we know that true and lasting happiness is an exclusive quality of the soul, and it comes only to worshipping God alone. If we are all seeking true and lasting happiness as the main goal in this life and the hereafter, our focus and efforts have to be to worship God alone and grow our souls by doing only what pleases Him.

Key to Happiness: Worshipping God alone advocated in all of God's scriptures.
Hear, O Israel! The Lord our God is One God! Therefore, you shall adore the Lord your God with all your heart, with all your soul, with all your mind, and with all your strength. [Deuteronomy 6:4-5, The Old Testament 3:18]
[1:1] In the name of GOD, Most Gracious, Most Merciful. [1:2] Praise be to GOD, Lord of the universe.[1:3] Most Gracious, Most Merciful.[1:4] Master of the Day of Judgment.[1:5] You alone we worship; You alone we ask for help.[1:6] Guide us in the right path;[1:7] the path of those whom You blessed; not of those who have deserved wrath, nor of the strayers. [The Final Testament]

Proven Formula for Happiness: Now and Forever.
Believing in God alone, believing in the Hereafter, and leading a righteous life. The Key to Happiness: [10:64] Surely, those who believe,those who are Jewish,the Christians,and the converts;anyone who(1) believes in GOD, and(2) believes in the Last Day, and(3) leads a righteous life,will receive their recompense from their Lord;they have nothing to fear,nor will they grieve. [The Final Testament]

What treasures lie in store for the worshippers of God alone.

[10:64] For them, joy and happiness in this world, as well as in the Hereafter. 

This is GOD's unchangeable law. Such is the greatest triumph.

[13:29] Those who believe and lead a righteous life have deserved happiness and a joyous destiny.

[16:30] As for the righteous, when they are asked, "What do you think of these revelations from your Lord," they say, "Good." For those who lead a righteous life, happiness, and the abode of the Hereafter is even better. What a blissful abode for the righteous.

[16:122] We granted him happiness in this life, and in the Hereafter he will be with the righteous.[32:17] You have no idea how much joy and happiness are waiting for you as a reward for your (righteous) works.

[39:17] As for those who discard the worship of all idols, and devote themselves totally to GOD alone, they have deserved happiness. Give good news to My servants.[90:18] These have deserved happiness. [The Final Testament]