I know when my self-confidence plummets, it's when I irrationally think people around me don't care at all about what I have to say or what I can do. I think if you find yourself in a situation like that, you just need to step back a bit and think. Shift moping about your self-worth and start thinking about how you can make yourself unmistakably stand out!
Sound advice
How can someone expect you to treat others with kindness if you can't treat yourself with kindness?