ktsnake is right. I was like you, too, annice. I was shy and didn't have much to say. I decided to talk to people about their interests. I would listen to what they said and ask questions about what was going on in there lives. It was funny. I would talk maybe 10% of the time and people would say that we had the best conversation.
It built up my confidence. If you feel that you lack good conversational skills, you just need to practice. Read newspapers, magazines, and books to be informed and have topics to discuss. With some practice, you can become a great conversationalist.