There is a story about compound interest called "the rice grains on a chessboard."

A king from ancient India wanted to reward the inventor of chess and asked him what he wanted. The inventor made a seemingly "simple" request for a small reward:
This reward is about rice. Place 1 grain of rice on the 1st square of the chessboard, 2 grains on the 2nd square, 4 grains on the 3rd square... and so on, with the number of grains on each square being double that of the previous square, until all 64 squares are filled.
The king felt that this reward was insignificant.
What about the results!
This "simple" little request cannot be fulfilled even by emptying the grain storage of the entire country.
Because compound interest has taken effect!
At first, compound interest did not explode; at the 10th square, there were 512 grains, and by the 20th square, it exceeded 1 million grains. Then at the 30th, 40th, 50th squares...
Today I specifically used a calculator to calculate, multiplying by 2 continuously. It didn't take long, and the calculator's screen couldn't display anymore, showing a special symbol.
When I heard this story as a child, I found it hard to believe and thought it was just a story, far removed from my own life.
In fact, it is not the case.
The effect of compound interest is initially subtle and unnoticeable, but later it will stand out and become impressive.
In finance, compound interest emphasizes the importance of continuous habits.
Taking a college student who has just entered the workforce as an example, if they save 500 yuan every month, with a monthly savings increase of 20% each year, in the second year they will save 600 yuan per month, and in the third year 720 yuan per month...
10 years, not counting the miraculous effects of compound interest, just talking about persistence.
Gathering sand to build a tower, in 10 years, there will be 150,000. Not a small amount.
The compound interest in finance also emphasizes the importance of time.
Compound interest will explode in the later stages. The earlier you start accumulating, the more amazing the returns will be. Continuous small investments will be more effective than large investments made later.
The rice in the 20th grid is worlds apart from the rice in the 10th grid.
Starting with a monthly deposit of 500 yuan for 20 years, and continuously saving while calculating compound interest, the result will be astonishing. This is why the money Buffett made after the age of 60 is more than 10 times the total he made before turning 60; this is also the power of compound interest.
Compound interest is powerful not only in finance but also in daily habits.
The "compound interest effect" of habits, if a habit can be maintained for a year, 365 days, it will produce a compound growth effect.
The book uses a formula: 1.01 raised to the power of 365 is approximately 37.8, which means that progressing a little bit every day, even just a 1% improvement, can lead to an almost 38-fold increase in ability after a year.
Spend some time each day investing in yourself—your health, your profession, your wealth, and your relationships. Over time, it will have remarkable effects.