I dunno, it really looks like other types are much better at keeping such things to themselves. They also don't like discussing about such things or comforting other people...
I guess I am pretty good at not talking about much. Mostly because I don't think anyone wants to listen to my junk and they have their own stuff to worry about. Of course, if you feel like you need to discuss something, I'll be right there. As useful as I may or may not be in such a situation.
The other problem in my case is that I tend to bring myself and my own problems up very easily as well, which is kind of selfish and stupid of me.
And it might not be bad to bring up something you're thinking about. Something bothering you might be able to help you relate to the other person.