Many people like to treat trading as a daily settlement, for example setting a goal for themselves, like earning 30 USD in a day or making 1% of the total position size daily, which is very foolish.

First of all, setting this goal is already wrong.
Once you set such a foolish goal, you will force yourself to trade every day, leading to a series of reckless moves like quick entries and exits, and eventually, you’ll get emotionally overwhelmed and lose everything in one go, burning through your capital day after day.
Truly good trading always involves spending a lot of time waiting—waiting for major trend changes, waiting for a reasonable right-side structure shift, waiting for a reversal in market sentiment, waiting for macro information to be confirmed.
And before each trade, you must have expectations in your mind: how much of my total position will I lose if I’m wrong, what leverage should I use, where should I set my take profit and stop loss.
Not just jumping in without any logic or plan, wanting to make a quick profit and then walk away.
As long as you are human, without trading discipline, you will hold onto positions recklessly, and the final result speaks for itself—only liquidation, losing everything in one shot.