Many people live a restless life because of acquiring much wealth, though people will not acknowledge this fact until they get there. "Vanity upon vanity" said wise king solomon.
Check out what Agur said....
Agur son of Jakeh wrote: “Give me neither poverty nor riches. Just let me consume my portion of food.”
It is not easy to understand why this man pray this prayer. Shut mean that he did not want to be poor so as to be tempted to steal, because stealing would bring reproach to God's name.
But why did he not want to be rich? He wrote: “So that I do not become satisfied or content and deny you and say, ‘Who is God?’