ETH is currently around 3100, and there are still opportunities in the short term. My approach is to buy on small positions following the trend, but once support is broken, decisively switch to shorting.

**The logic for buying long is very simple**

Place a limit order to go long at the 3100 level, using 10% of your account funds to control the position. As for leverage, I recommend not to be greedy; 2-3x is enough, since the futures market can turn quickly. Also, always set a stop-loss at the same time—if it drops below 3080, exit immediately; this is the bottom line.

For take profit, I follow two steps: first, sell half of the position at 3140; then, move the stop-loss to the cost basis of 3100 to protect profits. When it rises to 3180, close all remaining positions. If it doesn’t reach 3180 but falls back to 3120, also exit proactively—don’t be greedy.

**Risk control standards must be strict**

Position in a single coin should not exceed 10% of the total account funds, and risk per trade should be controlled within 2%. This is not a suggestion; it’s a must.

**Mechanism for reversing to short after support break**

The key is this reversal logic—if the real body of the candle drops below 3080 and doesn’t recover within 15 minutes, it indicates a trend reversal. At this point, place a short order at 3085, with a stop-loss at 3110, and target 3030 downward. Leverage and position size should still follow the long entry standards; never add leverage during the reversal.

**Discipline is the core**

Once these parameters are set, it all depends on execution. Do not manually cancel stop-loss orders; let the system execute automatically. Don’t wait when it’s time to exit, and don’t hesitate when it’s time to enter. Short-term trading is all about speed and discipline—these determine success or failure.