There's a saying therapists use, "What we resist persists."

The research has shown that being open with others about your experience alleviates the symptoms of depression, including constant rumination. Putting on a happy face for the benefit of others, on the other hand, tends to make it much, much worse.

There are of course confounding factors like whether the person has a victimization complex or whatever, but those need to be handled on their own terms. I don't personally experience anything like that, so I don't know much about it, but my guess is that they would also generally be exacerbated by encouraging people not to talk about it.