Each time you journal you'll reveal a little bit more, and when you accept the words you write about yourself, you won't mind as much if others don't accept them.
Phrasing a situation down into facts helps to change perspective away from the ego pov and to dissolve any anger or other negative emotions.
By not reporting your emotions around a subject, you're omitting the facts of the situation.
Emotions, like everything else, can either both drag people down....or be used to amplify their strengths. The problem is that society seems to only consider the former and disregard the latter.
No, they are not. They are your emotions. Not saying that they are less real or that they should be dismissed, but a threat is a fact, your fear is your emotional reaction to it. There is a difference.
The difference is that you have control over your thoughts, reactions and emotions. If you do not differentiate between the outside world of facts and the inside world of thoughts and emotions, you mush them together into a mess.
I can learn to master my emotions and for example dissolve my fear. That will not remove the threat. If I learn to assess the threat regardless of my emotional reaction to it, I get a better grasp on the severity of the threat and can react accordingly.
That is not to say that emotions should be ignored. I'd recommend against that. Listen to yourself. If you feel the desire to journal them, by all means, do it. But for journaling _I_ prefer to differentiate and try to keep my emotions out of the narrative. You are free to do otherwise.
It's rooted in psychological well being, much like therapy. It's why I was most offended by the judge mocking Ross Ulbricht for committing his private observations, including criminal ones, to his diary. Modern life asks that we be strangers, even unto ourselves, understood only by our digital merchants.
I also think the level of security available these days is far superior to what you had growing up (e.g. the 50c padlock your sister could pick with a goddamn bobby pin), so the odds your immediate family is going to find out things you'd rather they not know has gone down a bit.