How do you make friends if you have no confidence in yourself to meet people?

Just be totally yourself. You could sit in a public place, say a pub or a bar, and read the newspaper or do a crossWord, or read a book, with a glass of your favourite drink in front of you (water is fine). Eventually someone is going to stop by and say hi, which is when you say hi back and just, yes, be yourself. You'll be in a conversation before you know it. Don't feel self-conscious; we've all been there and done that, and discovered people don't care as much about our personality and appearance as we think. Just do it.