Greg, This is great insight into your trading. Lets answer each question . . .
Should I place my emphasis on the afternoon accordingly? A smart trader puts emphasis on wherever they find success. You can see many of us in the room have completely different trading style. Some like high priced stocks, some like mid floats, some like 15 minute candles, some like 1 minute price action and some like 5 minute candle setups. . . etc. We can put your question in the same category. Some traders thrive in the early morning with the extra volatility, while others get eaten alive and chopped up. If you find yourself losing money in the open, and making money in the later hours, it is very reasonable to conclude that your trading style is better suited for the later hours.
Does my mindset and personality make me better in the afternoon - is that even possible? YES, it is definitely possible. Maybe your personality and mindset makes the extra volatility in the morning very difficult to trade. Maybe you find yourself revenge trading after being wrong and caught in chop, and then seeing a trend go without you. While in the later part of the day, trends have already taken shape, everything is slower, and you have more time to read and analyze the charts and build a game plan. On top of that, not everyone can function fully in the early parts of the morning. Some people thrive later in the day after they are fully awake and prepared.
Or, if I rarely do well in the morning, am I doing something wrong? Trading is very VERY difficult and just because you don't do well in the morning and do better in the later hours, does not mean you are automatically doing something wrong. It means you potentially found an amazing solution to your specific trading problem. Which is you trade poorly in the morning, and trade better in the later hours . . . so put your focus on the later hours.
I would suggest you really analyze your trades and make a chart comparing your morning and afternoon trades. What setups are you taking? How big are you winners and losers? What specific issues do you have? Do you revenge trade in the morning? Over Trade? Miss stops? Not trade setups . . . and compare all this to the later hour trades. Try to find the root cause of the difference and come back to share on this forum what you found and then we can look for solutions on why the morning is harder to trade for you. Maybe the solution is to trade in the later hours, or maybe it all boils down to one specific issue we can pinpoint and work on! Looking forward to hearing your thoughts.