Make sure you read all the news stories about rich people who are depressed, and have horrible lives. Probably a lot more common than you think.
Also a lot of people just haven't found something that they truly love doing.
There's plenty of rich miserable people, and plenty of miserable poor people. If you have very little, you've got very little to worry about...
An attractive statement but totally wrong.
If you have very little - if you are poor, you have to worry about renting a roof for yourself, and food to eat, and clean-enough water, and having enough warmth, and healthcare, and then all of those things for each member of your family.
Every second of every day.
So much that you cannot manage anything else.
That contributes towards depression, sure.
Find something you truly love doing? This is usually something that rich people have the capacity and opportunity to do.