Time.

prophet Muhammad Sallah Allahu 3alayhi wa sallam said;
لا تزول قدما عبد يوم القيامة حتى يسأل عن عمره فيما أفناه وعن علمه فيم فعل وعن ماله من أين اكتسبه وفيم أنفقه وعن جسمه فيم أبلاه
(tirmithi said its saheeh)
That Allah will ask about;
1-your life in what you have finished it?
2-your knowledge, what have you used it for ?
3- your money what you have spent it in ? and how you optained it
4- your body, in what effort you have used it?


what caught my attention in this hadeeth is the your life ? some people live and die with no purpose at all, in fact they live like what Allah said about the kuffar

وَالَّذِينَ كَفَرُوا يَتَمَتَّعُونَ وَيَأْكُلُونَ كَمَا تَأْكُلُ الْأَنْعَامُ وَالنَّارُ مَثْوًى لَهُمْ

those who reject Allah will enjoy (this world) and eat as cattle eat; and the Fire will be their abode.

dont live a life of food sleep and messing about.....