Too sensitive to criticism from others and don't know how to help yourself

Lately I've been finding myself a bit closed off, not really wanting to deal with other people, always prone to seeing other people's flaws and then thinking they're kinda boring.
For example, some people are particularly gossipy, and when they open their mouths, they point at others, spout off about what they're wearing, or sneakily show me her BFF's private chat logs.
I quickly lost interest in this kind of people, and thought that time would be better used to learn something.

This rather makes it easier for me.

When dealing with people, if they belittle or criticize me, I get easily hurt and then choose to avoid it.

Stay polite on the surface.

But lately, I've also been having problems with my husband all the time, like he doesn't always understand me or he's still picking at me when I open up, which makes me especially angry, even though he's apologized for certain things he's said before.

I can't figure out what the problem is right now: is it that I'm too sensitive to criticism, or that my husband doesn't talk too much to hurt people? Or is it because I was abused as a child that I've become so withdrawn? Suddenly I want to run away from it all, even to the point of divorce.
My heart is all of a sudden empty.