"For if anyone thinks he is something, when he is nothing, he deceives himself. " - ( Galatians 6:3 )
We need to deny we are 'something' and acknowledge we are 'nothing'.
Of ourselves we don't know where we came from, why we are here or what, if anything, happens to us after death.
We cannot make one hair white or black.
"Simon Peter answered him, "Lord, to whom shall we go? You have the words of eternal life. " - ( John 6:68 )
The only reason people 'own' possessions like land in this world is because people say so.
But the truth is everything in this world belongs to God.
"And if you have not been trustworthy with someone else's property, who will give you property of your own? " - ( Luke 16:12 )
"Those who belong to Christ Jesus have crucified the flesh with its passions and desires. " - (Galatians 5:24 )
"Therefore, if anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come. " ( 2 Corinthians 5:17 )
"And everyone will hate you because you are my followers. But the one who endures to the end will be saved. " - (Mark 13:13)
So, in summary, we need to stop being king of our own lives, and every day to do the "Work of God" which is to believe in Jesus (not just His cross ), and gradually we will be transformed into this 'new creation', and all our joy will come from serving God instead of from entertainments and pleasures. And we will look forward to the day He calls us home.
And then we will "walk even as He walked" - (1 John 2:6 )