Today I came across the following quote from a former Americas Cup skipper, which is so true when applied to trading:
"You cannot outperform your self-image".
How you see yourself, as well as how to talk to yourself, has a huge impact on how you perform as a trader. Having an underlying confidence in yourself, the method you choose to follow, as well as the knowledge you have a robust risk management plan in place will undoubtedly help in this regard.