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It is foolhardy to make a second trade, if your first trade shows you a loss. Never average losses. Let this thought be written indelibly upon your mind.

Jesse Lauriston Livermore (1966). “How to Trade in Stocks: The Livermore Formula for Combining Time Element and Price”
It is foolhardy to make a second trade, if your first trade shows you a loss. Never average losses. Let this thought be written indelibly upon your mind.