Firstly I'll say I see trust as a major part of respect. To me if you break someone's trust you've shown them disrespect (though at times it can be warranted to some extent). Breaking trust is a good way to make relationships a whole lot more volatile.

1)Would you consider yourself an open person or someone who's guarded?

I'd say I'm an open person. Yet I feel in this day and age you have to keep some things guarded, even if it may just be temporarily. The truth is often too much for people. I believe in give and take. If someone is honest with me, I'll be more open with them.

2)What do you think are the pros and cons to being either too open or too guarded?

It's always better in the long run to be honest and open, but at times it can be beneficial to be slightly guarded or face a possible really bad situation. And often you have to make the call as the future isn't always the easist thing to predict with any large amount of success.