I don't react at all to single bad trades. However, I will get down after a day when everything goes wrong (it does happen).
When this is the case, my only solace is to remember the other disastrous days, and how, in the long run, they were just bumps in the road.
I have had some huge losing days. I try to think about the huge winning days to even out my head. But for whatever reason, thinking of my previous big losses seems to work better for me. I guess it's because I know I always came back.
But to bum after one bad trade? A waste of energy and time.
I do keep a grip exerciser on my desk...maybe that helps relieve tension. Broke my wrist a long time ago, and it just became a habit to keep it around.
I now know I will never let myself have another huge losing day. Of course part of it is I no longer have the kind of buying power my firm used to give me (nor does virtually anyone else....the market is just too tough now for the kind of big momentum plays we used to make). The other reason is I have an "uncle point". I lose $XX and I just take off. I know it's not my day. And I also know that "revenge trading" was the cause of all my worst days.
Someone suggested a punching bag. Not a bad idea. Me, I either go to the gym, or to the driving range. In the daylight savings days, I may play 9 or 18 holes of golf. Even in December I might if I am out of day early enough to still have enough daylight. Which at 10 am is easy.
Peace,

Rs8.5