Too Long; Didn't Read
Two Versions of Your "self" are Ruining your Trading Results. One is your Experiencing Self, the other the Remembering Self. Daniel Kahneman has proven it through experimentation. When you are executing your plan perfectly, your Remembering self will make you feel bad about the loss which happened at the end. You are constantly shifting between your Experienced and Remembering selves. The best way to manage this duality is to prepare to manage your trading results: come up with a plan that guides you to your desired outcome.