an open book困难

The lesson is not that you should make your personal life an open book, but rather, when given the option to offer up details about yourself or painstakingly conceal them, you should just be honest.

这其中的教训并不是说你应该把个人生活完全公开，而是说，当你可以选择是透露自己的细节还是费尽心思地隐瞒时，你应该选择诚实。