To be or not to be mysterious?

How much should an author reveal about herself? Should she be mysterious and let the readers guess? Or should she share as much as possible to keep the readers engaged?
I ask myself this question often when I am on social media or when I write a blog post on my website. Recently, I decided to publish my first NEWSLETTER. I don`t want it to be just promotion but to facilitate a closer connection with my readers. Again, I wondered how much of my private life should be disclosed in this letter. So far I have drawn a fine line between being personable and giving away too much information. The man in my life for instance doesn`t want to be in my public life which helps to know where the line is.
But what about me and my daily life and my travels and experiences? Already so much is out in the open when I`m feeding social media. I`m also a reader, and as a reader, I would like to know more about authors whose books I like. But do I want to know about every visit to the hairdresser or that they just had had a nap? It is a balancing act for sure. In my first newsletter, I share some of my private stuff so readers can relate to me but I don`t turn myself inside out.
Dear readers, what would you like to know about an author? Would you like them to be mysterious or do you want to know as much as possible? If you like to see how I have solved the dilemma, you can go to my website www.bernadettecalonego.com and subscribe to the newsletter. Maybe you feel like giving me your opinion afterwards? I am always looking forward to hearing from you!