After a good night's sleep, Ethereum has reached 2900.

On Friday night, Nasdaq fell by a full 2%, which is a significant risk, and there were no positive signals over the weekend. The probability of continuing the decline was high, and ultimately, this Monday continued last week's downward trend, further selling off.
However, I didn't catch the move either, because based on the K-line structure at the time, it was indeed possible to identify an upward trend, and I wasn't the only one who thought so. So I temporarily changed my short position, raising the target from above 3150 to 3300. Missed out on a small rally.

Answering: what to do if long positions get trapped?

You should review the weekend summary more thoroughly.
By Monday open, this risk factor has already occurred and can be ruled out.
The Japanese interest rate hike hasn't happened yet, but the market has expectations, waiting for the negative news to be fully priced in.
The Nasdaq crash was also due to the Japanese rate hike issue; essentially, these are chain reactions of the same event.
Liquidity issues are expected to recover after Christmas, and at the same time, a large number of liquidations of short positions have been gradually accumulated above.
Therefore, after the three risk factors mentioned over the weekend are resolved, and no unexpected negative events occur, the market can naturally move upward.

Additional note:
Today is Tuesday, and important Non-Farm Payrolls and unemployment rate data will be released.