No matter how skilled you are technically, a sudden loss of position can wipe you out instantly.

Many traders, when starting out, are most obsessed with studying techniques—indicators, patterns, entry and exit points—thinking that finding the perfect method will lead to continuous profits.
But with more experience, you'll understand: what truly helps you survive and go far in this market is not technology, but position sizing.
Many people don't lose because they see the wrong direction; they see correctly but can't hold onto their trades; they see wrong but can't withstand the losses.
Where is the reason?
It's often because the position size is too large.
When the position is large, the drawdown becomes bigger;
a big drawdown makes the mindset easily collapse;
once the mindset collapses, any technical system will fail.
Therefore, position management is ultimately not just about "how much to buy,"
but about doing two things well:
First, prevent any mistake from taking away your qualification to continue trading;
Second, always leave yourself the opportunity to enter again.
A small position is not cowardice,
but to stay clear-headed when judgment is wrong,
to remain calm and adjust during capital drawdowns,
and to still have bullets when opportunities reappear.
A truly mature trader not only studies how to earn more,
but also understands how to survive first in the face of risk.
In the end, you'll realize:
techniques influence how much you can earn at once,
but position size determines how far you can go in this market.