think before you feel

horace walpole had said
"life is a tragedy for those who feel, but a comedy to those who think"
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how true for trading as well!
"trading is a tragedy for those who feel, but a comedy to those who think"
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should traders feel what they are thinking?
or think what they are feeling??
or feel what they are feeling???
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if you ask me - none of the above
traders should only think what they are thinking.
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don't feel it, just think it.