Last night, I was watching the trend of SOL, and my finger hovered over the trade button for a long time. The temptation to pick the bottom at 95 USD kept looping in my mind, while the fear of missing out at 150 USD lingered. The price swung between these two points, and my mindset also fluctuated. Suddenly, I turned to look at my account, and the funds stored in USDD were quietly lying there, consistently valued at 1 USD. In that instant, I realized – before dreaming of a big pump in the next second, I must first ensure that I won't get liquidated in the next second.

Everyone is making predictions in the market. Some see the weakness of SOL fading and believe a rebound is coming; others look at the technical patterns and think that breaking the level is just a matter of time. But those who have truly experienced several cycles understand that after such pressure builds up, the direction of the breakout is often a gamble. Betting all your assets on one direction is not an investment decision; it's a game of chance.

The problem is actually very simple — how to pursue high returns without being completely out of the game due to a single misjudgment? The answer lies not in predictive ability, but in the design of a risk framework.

So in my account structure, USDD has always been a standard. It's not for it to appreciate (it won't), but for it to hold the bottom line. When the market is wildly rising and falling, this part of the asset remains completely neutral, giving you room to make mistakes. Whether SOL rushes to 150 or drops to 95, the 1 dollar value of this USDD remains unchanged, allowing you to have the confidence to make calm judgments in the midst of panic.

Rather than staring at the K-line and betting on wins and losses, sometimes taking out a portion of your principal to do "insurance" can lead to living longer and earning more. This is why stablecoins have a place in the portfolio of every mature investor.