Dealing with city lifestyles

Simmel discusses the blasé attitude as a type of protection individuals in a metropolis use to adapt to the “intensity of city life” (Applerouth, 2008). Do you think individuals with what are considered mental conditions such as depression, anxiety, or phobias failed to take on a blasé attitude to manage lifestyles in the city and this is why they developed these conditions? Or is it that they are taking on a blasé attitude which individuals in a society failed to recognize as a way to manage these extreme lifestyles in the city?