Be yourself...

If you do a great job of developing your confidence because you;

1. know your strengths
2. value those strengths
3. know how to exploit those strengths consistently,

then it is very likely that you can keep asking a simple question of yourself in order to perform at your best

"how confident am I that I can be myself today?"

hopefully, everyone should always be 100% confident that they can be themselves, you just have to put in the ground work to make sure that being yourself means something powerful to you.