Something is Wrong

I have been trying to sort this out since yesterday, but I find my blog has got something wrong in it. I lost all my friends and neighbors list as well as the archives of my post on the left hand side. Tried my best to check on the layouts, and looked at settings, too, but nothing helped. I do not know what else to do, helpppppppp! I do need help. This blog is my only leisure in life at present. I love what I am doing with it, but now it's into pieces.
Please, I am desperate to get it back to its usual self.