I have been a hardcore trader for over 40 years. Made and lost plenty of money but was able to retire nicely at age 50. Still trade daily and making good money. Right now I have just bought a large position in silver. up close to ten percent since I bought it a couple days ago. It is a leveraged ETF.
You could have made a bundle on M, SBUX, FITB, CAT, etc...Some of these seemed to be going out of business, and then, boom, they weren't. Did they get secret money? What changed? Nothing except the stock prices.
Investments goes up and down. In the last few days, my investments took a big beating at least on paper. My strategy is hold stocks long term with minimal trading. I hedge this with a large cash position in case all hell breaks loose.