Eliminate the concept of being right and wrong from your mental framework when trading.

Cut the words win and lose.
If you have a winning edge stop putting so much weight and focus on the outcome of each individual trade you take.
Individual outcome will always be random.
Journal the loss/win.
Dont overanalyze it and tweak out.
Keep following the plan.
Stay the course.
Don't deviate.
Do this and over the long run you win.