When it rises, follow the trend to buy; when it falls, buy less at the bottom. A few days ago, I wanted to buy Tesla at 406 but didn't. Last night, I set a buy order for Tesla at 436.5 and just bought it without canceling the order; now it's at 470. Later, I canceled the order and bought Nvidia instead. I started buying one lot from 138, and last time it reached 141, I could have made 3000 dollars, but that day I made 6000 dollars with #xmr and #LTC📈 , so I didn’t sell Nvidia. Then I kept increasing my position, but it kept falling. I was so angry with myself yesterday for buying Nvidia when I saw Tesla rising while Nvidia was still falling, so I went to bed heavily invested in Nvidia. Sigh. It looks like I'm facing a floating loss of tens of thousands of dollars today.