Integrity is the ability of a trader to trade with complete and uncompromising adherence to his or her virtues, beliefs, and personal trading methodology. Traders with integrity have the ability to enter into a trade with undivided attention, and are not distracted by what anyone else is saying or doing. They know that their trading methodology is completely valid.
People who trade from integrity are operating from a position of strength, free of fear, totally in charge of their mental environment. They will rigorously obey the rules they have developed for their trading methodology. Specifically traders with integrity are immune from what their vices, disempowering beliefs, and unconscious are telling them about the rational reasons the market is acting in a certain way. They will continue to trade within their trading methodology.
Quite simply, traders with integrity will be brutally honest at all times with themselves. They will always hold themselves responsible for their actions and beliefs, and will demand a strict code of personal conduct.
– John Hayden, The 21 Irrefutable Truths of Trading