Recently, many people are arguing about data availability, ordering, finality. To put it simply, I focus on one main point: does your transaction "actually get seen by others, will it be front-run, and does it count in the end"?

Getting seen = not hiding it (otherwise, it's impossible to trace if something goes wrong),
Will it be front-run = about the ordering (MEV + validator income being high, it's normal for retail investors to complain),
And whether it counts = finality. Don’t think that just clicking send makes it secure.

Now I’m actually a bit calmer than before. My habit is: every time I want to jump in and chase an event, I first take the 10 seconds before sending the transaction to do one thing—
Check the mempool congestion and the packing rhythm of the last few blocks, and
mentally go over “Am I most afraid of being front-run or rolled back?”
If I can hold back this impulse, I’m less likely to panic and click randomly.
Anyway, I don’t pretend to be perfect; even fast hands should leave themselves a brake.