Stanley Druckenmiller said selling Nvidia in the summer was a huge mistake. I wonder if he remembered the colossal error he made in 2000 when he said this:

At the end of '99, Druck thought tech stocks had peaked and sold his holdings for massive profits. But in Q1 2000, tech stocks kept soaring. Druckenmiller couldn't stand the rally and jumped back in by late February 2000—just before the tech crash.

This blunder directly led to Soros Fund Management liquidating and converting to a family office, with Druckenmiller himself leaving Soros.

Bringing this up isn't to predict tech stocks' fate—we've discussed how today's tech fundamentals are worlds apart from 2000. The point is: even titans like Druckenmiller face agonizing regret after selling too early. Same story 20 years apart. Emotional discipline is every investor's core curriculum—that's why Buffett says emotional stability is the top trait for successors.$NVIDIA(NVDA.US)