Remember, we are khalifah of Allah and we have our goals. Living in this world is only for the preparation before going to the next one, Hereafter, which is everlasting and permanent. However, with today’s excitement, entertainment, technology and so on, mankind easily forgets their goals. They forget to balance their affairs and maintain their spirituality while being a normal person living in this world. There is one hadith where it mention :

“The wayfarer or stranger do not avoid comfort, enjoyment, or interests related to their journey or place of sojourn. However, they realize that their destination is more important than their fleeting journey or sojourn. Thus, they prioritize. They realize that this worldly life is a means to the next life. We seek the good in it, as a means to the good in the next life, not as an end in itself.”

There are also verses in al-Qur’an which mention about worldly life and Hereafter :

In verses 64 & 37 of chapters 29 and 47 respectively, `worldly life' is regarded as play, amusement and pastime and the `life hereafter' is regarded as the life indeed, for example: the eternal life that will never end.

Hence, mankind should not be busy with the world affairs because it actually will make them ‘sell’ their hereafter only for this worldly life. In (2:86), Allah warns of the ‘dire punishment’ :

“Those are they who have bought the life of this world at the cost of price of the hereafter. Their torment shall not be lightened nor shall they be helped."