The richest man is not he who has the most, but he who needs the least.
This reminds me of Apostle Paul's writings:
1 Timothy 6:6-10
6 But godliness with contentment is great gain. 7 For we brought nothing into the world, and we can take nothing out of it. 8 But if we have food and clothing, we will be content with that. 9 People who want to get rich fall into temptation and a trap and into many foolish and harmful desires that plunge men into ruin and destruction. 10 For the love of money is a root of all kinds of evil. Some people, eager for money, have wandered from the faith and pierced themselves with many griefs.
10 I rejoice greatly in the Lord that at last you have renewed your concern for me. Indeed, you have been concerned, but you had no opportunity to show it. 11 I am not saying this because I am in need, for I have learned to be content whatever the circumstances. 12 I know what it is to be in need, and I know what it is to have plenty. I have learned the secret of being content in any and every situation, whether well fed or hungry, whether living in plenty or in want. 13 I can do everything through him who gives me strength.
Contentment is an important key to live life well. It is often difficult to draw the line between our needs and wants. "The lust of the flesh, the lust of the eyes, and the pride of life (1 John 2:16, NKJV)" stands in the way. It is our human nature to want more and more. Learning to live with less, and learning to say no, will heighten our senses to spiritual things and eternal fruits.