Here are several investing maxims that every investor should memorize and insight repeatably to pick winning stocks, according to Peter Lynch:

1. A good company usually increases its dividend every year.
2. You can lose money in a very short time; it takes a long time to make money.
3. The stock market really is not a gamble; as long as you pick good companies that you think will do well and not because of the stock’s price.
4. You can make a lot of money in the stock market; but then again, you can lose a lot of money.
5. You have to research the company before you put your money into it.
6. When you invest in the stock market, you should always diversify.
7. You should invest in several stocks becasue for every five you pick, one will do very great, one will be very bad, and three will be okay.
8. You should never fall in love with a stock…you should always have an open mind.
9. You shouldn’t just pick a stock: you should do your homework.
10. Buying stocks of utility companies is good because it gives you higher dividends, but you will make more money in growth stocks.
11. Just because a stocks goes down doesn’t mean it can’t go lower.
12. Over the long term, it is better to buy stocks in small companies.
13. You should not buy a stock because it is cheap, but because you know a lot about it.

Look for shares that offer “growth at a reasonable price” which helps you to avoid two common investment mistakes:

1. Either paying too much for fast-growing companies;
2. Or buying seemingly cheap firms without realizing that they have stopped growing.

https://youtu.be/hKdtS_0vQ48

References:

1. https://www.safalniveshak.com/value-investing-course-peter-lynch-way
2. https://sites.google.com/site/changechina2050/investment/learn/peter-lynch-s-investment-rules