I have only told like 3 people in my lif besides pdocs and Ts about my depression and mood issues.
And I don't tell them everything. I leave out the really bad stuff.

I remember when first depressed I had read a depression memoir (Some title like "the beast"). And then my mom started to read it and she asked me with a horrified expression "is this what it is like for you??!"
So I downplay it and make sure that when they visit the dishes are done and house is clean and I am presentable and sane. Because the only thing worse than feeling depressed is feeling depressed AND feeling responsible for people worrying about you....

I am also super paranoid about peple at my job ever finding out. Even now i sometimes worry that my support group is a little too close to work and that one day a parent of a student is gonna walk in. And that they will break that whole anonymity clause, and I will be ****ed.