If you're not feeling confident, there's wisdom in the saying, 'Fake it till you make it.'

Standing tall, using open body language, and speaking clearly can actually trigger changes in your body that will help you feel more sure of yourself.  

You can also strengthen your confidence by nodding in agreement with your own thoughts. Give it a try—think of a challenge you're facing and say, 'I can do this!' while nodding your head.