Try guessing the bottom for a stock based on random news stories not necessarily related to the markets. Like the US is sending several dozen 155 mm howitzers to Ukraine. The mm is the diameter in millimeters of the artillery rounds they're also shipping over there. NVDA is at about $185 now, so I simply wait for it to sink to $155, buy a ton of it, sit back and watch it go up or at least never any lower.
And this post is still kind of on topic for the thread because it's a slightly better method than using monkeys to throw darts at random prices on a chart. Edit: As for something more concrete I got lucky by selling all my NVDA at $201 before the close on the big up day of Wednesday for a small profit of a few hundred $.
But that's not enough, I want to get right back in it for huge short term wins. Although I know the easier and boring way is to have held it for the next few years for a possible 10x or whatever monster gain.