If there are things I've noticed about my own driving since I've started to take a more casual approach to the game is that it's become much more rewarding to me to have a clean race. To give a car time in front to recover from a small mistake, to give space going into the corner and give way if an overtake is too risky. To just look for a more enjoyable drive than being obsessed with gaining every position. Not that I was dirty at all before but I would definitely take chances, some stupid, some borderline with my gains vs. ruining some elses race, and the change has felt a lot more satisfying.
The acceptance that I'm probably not going beyond B at this point, and that that's okay has led to me searching more for a good, clean race than a higher position, and making sure as much as I can that the players around also get the same result. Whether they appreciate it or not
Definitely improved my mental health when competing online and not just in GT and in turn it helps me notice the other drivers around who are doing the same and prioritising fairness above results.