Hug yourself and feel confident

Yes, you do have to love yourself.

How can you expect anyone to love you, if you yourself do not love you?

Give yourself a big hug and say "I love you, [YourName]"

This may look funny at first, but it will grow on you and you will come to enjoy your hugs.

Keep a steady routine, first thing in the morning, and just before going to bed seems to work quite well. Keep it up for a month or more, and you will feel more loved and loving of yourself.

What does this have to do with confidence? Well how do you expect to be confident if you do not love yourself. Start with yourself.