My feeling after last week

I don't know where to start.
Last week I start my office life, and I work at the HR.
There are many co-worker that they are very nice, However, I used to say that I would't put my feelings of my colleagues again, And the truth tells that I'm right. I better keep my mouth shut, and don't tell the true feeling to anybody. I know it heard pathetic, when you could not tell anybody your true feeling that your feeling would be so hardly. It doesn't matter when I've got real friends.