Since I started after a trade, whether a winner or loser, I would reflect on whether I had made an error or blooper like this executing the trade, to make a "Top 10 Trading Mistakes" list. This list is now 3 pages with over 100 one-liner bloopers and still growing.
Number one is a good example, has nothing to do with planning or deciding the trade, would never see it in any trading books, but was my mistake that affected my results:
"1. Twitching Finger" -- I would keep the cursor over the buy/sell/enter/exit button, to be ready to execute exactly at the right moment. But then I noticed my finger would twitch and click the button before I intended or was committed to the action.
Solution: always keep cursor to side of button over a non-active spot of the screen, and consciously move cursor to button when ready.