Talking too much

Today I was told I'd been talking too much, about things I shouldn't.
Now, there are several aspects.
Yes, I talk a lot, sometimes too much. Let's face it. It may be a fault, it may be OK, but it's true nonetheless.
Now, sometimes I really regret what I've said. There's a lot of proverbs discouraging talking when one isn't absolutely sure...However in my not so distant past, when I was depressed, and after, I maybe discovered the pros of speaking. When we really have to speak, these are rare instances. Sure, if we were more careful about speaking, we wouldn't regret anything. But the world would be much much more sadder place.
I became a person who needs to share her problems with others. Sometimes I maybe except the same from others - and it's a mistake. Still, I'm not gossiping everything with just everything. Actually there are things that I considered of so grave and personal character I haven't told it to anyone (though you may not believe me this).
I've always had two or three very nearest people to who I've been telling nearly everything. Not for gossiping itself, but because I don't know how to handle the information myself and need to talk and contemplate on it with someone else. Now these people tend to be those to who I believe very much and I consider them to be good people (in the way I feel it).
Now, yes, I'm not trustworthy, be forewarned. If I care for the person, I sometimes tell to these one or two near people, because I feel it's the right thing to do (to discuss it and think about it).
I think talking about problems is better than pretending they don't exist or letting them inside. You may feel other way and you are certainly right.
Simply, if you don't want me to think about something, don't tell me about the thing.