Diamond’s signature "80/20" method refers to trade setups that he believes offer an 80% chance of success. His technical approach often includes:

: Successful business owners do not blame the market or others; they take full ownership of every trade outcome.

: This is built by strictly following rules and knowing you can identify high-probability setups.

: He advocates for taking profits while momentum is still favorable rather than waiting for a market reversal, famously stating it is better to "sell too soon than too late". The Pillars of Emotional Discipline

: He looks for a "free ride"—a trade that moves in his favor immediately. If the market does not react quickly, he exits to minimize exposure. Business Rules for Risk and Capital

Diamond argues that even the best technical system will fail without psychological control. He emphasizes:

: He primarily executes trades on very short-term charts to capitalize on quick market momentum.