I feel the same way that you do at times. Have you ever been judged or rejected for opening up to much to other people in the past? I sure have! It hurts to be called 'whiny', that I'm to "sensitive', etc...

If you feel that some people will distance themselves from you or judge you for opening up and venting about problems, then don't trust them with your problems. Also, they're not really your friend. Real friends support you and they don't judge you or try to avoid you when you're going through a hard time.

I can't help but think of this Black Flag song now. The lyrics go something like this:

Every time I open my mouth, I wish I would've kept it shut

Also, "My War"

You think that you're my friend, but you're one of them