You lack a trading system—no fixed approach, rules, algorithms, or discipline.

In 2008, Buffett bought BYD for around HK$8. When BYD surged to HK$80, people said: Buffett truly deserves the title "God of Stocks."
In 2012, BYD fell back to HK$9, but Buffett continued to hold his position. People said: Buffett is "past his prime."
In 2017, BYD climbed back to HK$80, and Buffett kept holding. People said: Buffett is indeed the "God of Stocks."
In March 2020, BYD's share price halved to HK$33, yet Buffett still didn't budge. People said: Buffett has lost his mind; if it were him, he would've sold after a tenfold gain long ago.
In January 2021, BYD's share price rocketed to HK$237, and people said: Buffett really is the "God of Stocks."

At the end of the day, you don't have your own trading system—meaning no fixed trading philosophy, rules, algorithms, or discipline.