You are often your own best and safest counselor.

I know one woman who long ago said a thing which should be a motto to those susceptible persons who in a sudden expansion of the heart tell all they know and which they would most wish to keep to themselves.
"My dear," she said, "in the course of a somewhat checkered life I have discovered that while I have often been sorry for things which I have told, I have never had cause to regret what I have kept to myself." If you have a secret and wish to keep it, guard it jealously.

It ceases to be yours alone when you impart it to another.

Your confidante may be discretion personified, and, yet again, she may have some nearer and dearer one to whom she "tells everything," even the secrets of her friends.

Or, you may in time learn to be ashamed of the confidence which you have reposed in this person, and the knowledge that she knows and remembers the thing, and, it may be, knows that you feel a mortification at the thought of it, will gall you unspeakably.
Perhaps the hardest struggle that comes to the average human being is to let others be mistaken.