I can close my facebook permanently or I can do with my FB account?

[Rebeca]

So, I find facebook too crazy. They post about themselves, photos that they show themselves, and a lot more. I don't like to post these stuff... I feel that I want to leave Facebook because of that. Also I have school friends in Facebook. I don't sign in Facebook for a very long time, even months. I use it only when I absent in school. That is all.

What I can do, delete my FB account or post that I want to leave in Facebook and then delete facebook? I feel a little unsafe every that I sign in on Facebook. The good thing is that other school friends are in other social websites such as YouTube, that I sign in frequently and I feel more secure and safe.

I want with no misspellings and professional like answers. The best one will be choose.