Thanks to @小天宝宝, here is a summary:

Before placing an order: Always control your emotions, no matter when!
Mindset: Take it slow, don't rush, focus on a 50% return rate, *00% depends on luck.
Quantity: Only open two orders a day and then rest (regardless of profit or loss)
Position: Fixed position for each time
Choose: trend orders, high yield orders, logical orders, do not gamble on news.
Position: Reduce the position when there is a 50% gain, take profit when there is a 100% floating profit, and stop loss at another 50%. // Limited profit is the key!