Looking at past results, just 5x shorting BTC, making money is definitely not a problem, but what if you're wrong once? Like a sudden wick? Also, how much profit is enough to take? Because if you don't take profit in time, you could still lose money later, and that's a big issue too. Plus, I usually take profit based on market sentiment, which is also influenced by the fading of emotions. If I misuse that influence or don't take profit based on market sentiment, I might end up losing money.