What does it mean to have a princess life but no princess disease?

The sentence "A princess has a life but no princess disease" can be understood as:

1. The life of a princess: a woman with a good family background and superior living conditions, usually a woman born in a rich family or of royal descent.

2. Princess disease: refers to some women's overconfidence, demanding princess-like treatment, and usually showing behavioral characteristics such as arrogance, willfulness and excessive dependence on others.

Therefore, "having a princess's life but not a princess's illness" means that although this woman was born in a wealthy family or has excellent living conditions, she does not have the behavioral characteristics of arrogance, willfulness and excessive dependence on others. In other words, she doesn't have that spoiled attitude and behavior.