I honestly do not like personality tests in general. Not only because they are so broad as you stated, but because they only provide to us a temporary "picture" of the person.
I am a big fan of neuroplasticity and I've done some simple articles on this topic and that's partly the reason why I did not discuss it here. Also the point here was to make some discussion and to highlight some key points such as the importance of healthy habits, as you also noticed.
Thank you for reading and commenting!
All the best to you!