A person that recognises Allah Ta'ala will get Allah Ta'ala in his heart. An easy way of getting Allah Ta'ala in the heart is by following the Sunnats of Rasulullah Salallahu Alaihi Wasallam. Allah Ta'ala states in the Quraan Sharif,

قُلْ إِن كُنتُمْ تُحِبُّونَ اللّهَ فَاتَّبِعُونِي يُحْبِبْكُمُ اللّهُ وَيَغْفِرْ لَكُمْ ذُنُوبَكُمْ وَاللّهُ غَفُورٌ رَّحِيمٌ 

Say (O Muhammad Salallahu Alaihi Wasallam), If you claim to love Allah Ta'ala then follow me, Allah Ta'ala will love you and forgive your sins. Allah Ta'ala is most forgiving, most merciful.

When you love Allah Ta'ala, You will become the beloved of Allah c. A lover does everything for his beloved. He gives housing, clothing, food, etc. to his beloved, to such an extent that a lover is worried of the emotions of his beloved. Allah Ta'ala is that Being that causes one to be happy as mentioned in the Quraan Sharif,

وَأَنَّهُ هُوَ أَضْحَكَ وَأَبْكَى 

It is certainly He (Allah Ta'ala) who makes people laugh and cry

A person does not listen to jokes, go to night clubs, gambling dens to gain happiness. These are such places wherein a person becomes so depressed that it leads to suicide. Allah Ta'ala is the one who controls the heart of every person. He gives happiness and makes one laugh. On the other hand, Allah Ta'ala can make you cry in your very home in spite of having all the riches in the world. Everything is totally in the hands of Allah Ta'ala. If Allah Ta'ala loves you, He will keep you laughing all the time. We have been taught a Dua when we see someone laughing,

اضحك الله سنك

May Allah keep you laughing.

So a person that has established his contact with Allah Ta'ala, then Allah Ta'ala will keep him smiling and happy all the time. He will not have to experience sadness and difficulty except occasionally. One way of gaining this closeness to Allah Ta'ala is by following the Sunnat of Rasulullah Ta'ala.