Why can't traders hold onto their positions or end up selling prematurely, and when they hold on tightly, they keep riding the roller coaster, only to start pushing the price up after selling, making it impossible to get back in.

1: Lack of familiarity with the specific asset, insufficient in-depth understanding of the coin. (Only by studying investment research can the fundamental problem be solved).
2: Unable to see the overall trend clearly, always uncertain about the direction of the market. (Learn about candlestick charts and financial knowledge).
3: Position building plan, most beginner traders tend to gamble all-in, so it's easy to panic. After establishing a position, if the price starts to fall, they become anxious and cut losses, only to see the price rise 30%-50% or even more a few days later, then reflect on why they didn't hold on, turning what should have been profit into a loss. (Learn about position building plans and position management).
4: Patience after building a position is also an opportunity. Don't change your trading plan easily unless there's a black swan event. (Learn and practice emotional management).