When resources are limited we have Economy. Economy, in the largest sense, is the portioning of resources to last until the next set of resources arrive. Economy is also the system by which we buy and sell goods and services, and tally the preferences, losses and profits to continue the system. This Economy is used to gage our expression of wealth, optimism, security, and power as a nation of individuals.
The larger word Economy promotes behaviors that people don't like, but have to Do to maintain sane or comfortable continuity. The idea is to gage people's functioning and comfort level to where and when resources continue, or can be produced, ongoingly. People then gain strength in continuity, stamina in discipline, and practice negotiating choices. There are many sayings to put positive wit to this process:
'Saving for a Rainy Day' = Resources set aside for an emergency.
'A Penny Saved is a Penney Earned' = The money is available that was kept. (Reference: Benjamin Franklin, Poor Richard's Almanack, 1733)
Rations = Military meal portions in times of war.
Our Daily Bread = Sustenance of bread and faith from Heaven. (Reference: "Our Father Prayer," Mathew 6:11, Bible)
Meal Ticket = Slang for someone that is everyday support for someone else.
'An Apple a Day Keeps the Doctor Away' = Portion apples everyday for health. (Reference: Elizabeth Wright, Rustic Speech and Folk-lore, 1913)
To Make Ends Meet = To get through having things to do, and just enough money to cover them.
Investing in Futures = Speculative stocks that have a potentially great loss or return.
Capital Gains = Investment money that multiplied.
'A Bird in the Hand is Worth Two In the Bush' = It is better to keep and invest in what you have than to risk losing it. (Reference: Variation based on Proverb 49, The Proverbs of Aramean Ahikar, 700 B.C.)
Why is such whimsy put to a process that is generally difficult? Presumed thinking is that people will choose what they want, and what benefits them. They have to be taught to make long-term decisions, and to care for others. The correlation is to a toddler child who wants a lot of sweets, rather than the vegetables that will help it grow up healthy. The parents make the long-term decisions for the child, until it is responsible enough to make it's own long-term decisions. That happens when discipline, competence and capability are built up in the child/adult to make healthy long-term, and not indulgent short-term, decisions. Growing up requires learning Economy of resources for continuity and contentment.