We have touched on this twice (mental toughness | emotional intelligence), so feel free to look at the linked articles.
The most successful traders develop strategies for staying in their trading zone, or tuning in, during the course of the trading session.
But to the most successful traders do not stop there. They recognise that psychology is not just something to be reviewed at the end of the trading day. Rather, it is a vital element of their trading process.
Some traders find they trade best when they are calm and trade worse when they feel depressed; a clever way to identify this is to note your mood when you trade in clear concise terms (that does not disrupt trading).
Once you identify your ideal trading state, you incorporate a process to create or maintain your ideal state. This could include meditation or taking a walk. This helps you to trade in the zone, or tune in.
On the trading floor, the traders frequently refer to trading “setups”. This refers to criteria that have to line up in order to provide an edge in a trade. Similar to your ideal psychological setups, you need to have a trading plan which helps provide you with some structure (read how to create a trading plan and mental toughness for more details).
Just like sports, where an athlete focuses on their game plan rather than the scoreboard. A trader focuses on their game plan and not their account (some opt to ensure that it is not visible to them).