Why every trader must have a business plan?

How to make a Business plan for trading? We can simply call this as TRADING PLAN.
Trading is like any other business and doing a business without a proper business plan will end in disaster. So hopefully, by now you understand the importance of a trading plan (i.e business plan for trading), so it’s time to start making one. Though a proper trading plan can have anything you feel should go into it, it should account for the following parameters mandatorily.
They are:
• What to trade.
• Trading time frames.
• Condition for Entering a trade.
• Condition for Exiting a trade.
• Condition for Stop placement.
• Positional sizing.
• Money management.
• Risk vs. reward ratio.
• Back testing.
• Periodic Performance review.