Many new traders spend all their time looking for a "100% win-rate" strategy. The truth is, even a 70% win-rate strategy will blow your account if you over-leverage or trade without a stop-loss. One black swan event is all it takes.My advice: Never risk more than 1%-2% of your account per trade. Survive first, profit later. What was the biggest lesson you learned when you first started trading? Let's share and help others avoid the same mistakes.