I can’t keep a secret from everyone. It eats me from the inside. If I couldn’t tell a person, I think I’d share it with another animal, or at least a tree. It can be very therapeutic to hear yourself say things out loud, I don’t know why. I think it’s even better to speak secrets in the presence of another living thing.
In a similar vein, I don’t think it’s a good idea to tell any one person everything. Not only would it put you at risk of being very hurt, but they might feel overburdened by the weight of what you’ve shared with them.
Some things shouldn’t be investigated. When using a key to lock a deadbolt from the outside, does the thumbturn change positions on the inside? I don’t even want to think about it. Finding out, by locking the bolt with the door open and looking around to the other side, would diminish the size of the habitat of the unknown, where demons and ghosts have thrived for ages.