First we should define who a good trader is. A good trader isn't someone who doesn't record losses, besides there is no trader who record loss. A good trader is one who knows when to pause and re-evaluate trading strategies which brings us back to the question. To become a good trader you need to be;

• Patient enough to wait for a market you understand before you risk it.
• Intelligent enough to know when to avoid the market
• Conscious enough to know when to exit a trade
• Knowledgeable enough to always update what every strategy being used
• Wise enough to always confirm every market setup including that which are gotten from bots

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It is adviceable not to go into what you don't have a proper understanding of  what you are going into .

In terms of trading Bitcoin, it is adviceable to learn it properly if not you will be falling into a huge financial loss , because trading is very risky and can't be compared to investment, if you don't know how to trade, ask someone to teach you and know it before going it since any fund lost to trading can't be regained .

To become a good trader, you must be ready to take risk, be patience and tolerate, be very calculative and be ready for whatever the outcome will be.