This secret was revealed to me a long time ago, and I have used it many times. Each time I am amazed at how well it works.
The secret way to deal with a drop in self confidence is to act as if you were filled with it. That may sound impossible, but it is firmly rooted in the laws of the universe.
For example, you may not feel like smiling, but if you just allow yourself to slip into a smile anyway, all of a sudden you are feeling like smiling. And feeling better overall.
This is an example of the fact that "emotions follow actions and actions follow emotions". If you want to feel a certain way, then all you have to do is act the way that creates that feeling. And, if you simply go through the motions of acting in a way that a person would behave if he/she felt a certain way, than you will soon find yourself feeling that way.
This secret is so profound, and so powerful, and yet, probably less than 5% of the people who read this will apply this knowledge to their own benefit. I hope you are one of them...