The most important thing in investing is to live long!

Charlie Munger: Buffett and I were both very poor in the past, and we used the money we saved to invest. The essence of investing is simply controlling desires and living a simple life; this is the secret of investing. Then, you need to live long, and eventually, you will become rich. It's really not complicated.
Munger has explained the path of value investing very clearly. Firstly, life should be simple, and you shouldn't have too many consumption desires. If you work hard and your income does not decrease, you can use the money you save to invest. Investments should be made wisely; don't invest in junk companies, but in the best quality companies. Next, you should find ways to live longer. The longer you live, the greater the compound interest effect. The secret to living long is emotional stability. Emotions are like a gun; when you pull the trigger of your emotions, the muzzle is aimed directly at your health. Most negative emotions will vent by attacking some organ in your body, and with persistent negative emotions, hundreds of diseases will follow.