A disaster caused by a locked position: at the beginning, I only lost 16u.

I looked at the BTC chart—everything was very strong, and I expected there to be plenty of room for more upside.
When I watched BTC move to ETH, the disaster still came: I kept expecting it could go up.
So I didn’t dare to short.
Mainly because BTC was bullish, while ETH was much weaker.
Above is the resistance zone: 2422 on one side, and 2463 on the other.
Previously, I’d been warning myself about chasing longs at high levels. If I was going to go long, I should wait for a pullback and then enter.
But then I ended up doing a locked position—leaving a long at a high level.
And it also irritated me that not being able to operate for a long time was bad.
With multiple factors stacking on top of each other, when the shorts were in place, I took profit.
I planned to go long, but the support was quickly smashed.
The rebound should have been an exit at flat/break-even.
I care about win rate, so I didn’t close the position.
On top of that, later on I made a whole series of mistakes.
During the session, there were three times when I could have exited at/near break-even—I just didn’t want to admit the loss.
Otherwise, I could have exited with only a very small loss.
In the end, the result was a big loss. I paid the price, and I learned something.
When your logic is wrong, your position can. You can open the opposite trade first—take a small unrealized loss at the beginning, and that’s fine.
This can help you avoid “holding the losing trade.”
Then, if the position given by your wrong reasoning is offered the chance to reach break-even, you should close it.
If you’re never given that chance, lock the position early instead, so you don’t end up having to hold it.
If the trade is wrong, you must cut the position decisively—otherwise, if your later actions go off-track, it could turn into a big trouble.