To the OP: This is more difficult than it sounds, but think like a machine. A machine has no emotions.
During our trading career we have 'ahaa moments'.
The ahaa moments arrive when we get an insight into something which then grounds us.
Emotions are killers in trading, especially negative emotions such as regret, anger, disappointment, fear, hope (dangerous for trading).
My advice, you gotta be a machine.
How can we be a machine?
The ahaa moment - That markets are largely driven by machines, algos, institutions with strict trading rules. They trade by automation often in the general sense they are rules based.
When markets go down hard, don't fear, 99% of the time they rebounce.
But a warning: If you trade small cap stocks none of the above applies.