USDJPY SELL PROJECTION

How to explain leverage in the forex market?

What books did you guys read when you created your own trading system?

How to understand the phrase "the simpler the trading system, the better"?

What is the degree of simplicity here? Or the simplicity here is not what I thought, just use a few indicators, so what do you think of this sentence?

What is a perfect trading system? Or is there a so-called perfect trading system?

I have had a few positions liquidated recently, but fortunately the losses were not very large. I would like to ask everyone, is there any way to prevent liquidation? Is there any trading discipline?