How can I be less shy at work?

I have just started a new job, which has better pay and the people are very friendly, but I still dread going to work because the last job I had,

the people weren't very nice and I felt very alone there.

I am scared this

might happen in my new job and the people won't like me because I am very

shy in a working environment. What can I do to build my confidence and not

dread going to work?