Confidence is a fun tricky thing, but once you truly have it it is not going away!
First, start with positive self talk!
What do you like about yourself and what do you truly appreciate right now?
Next, get out there! Practice being around other people and thinking about anything but what makes you insecure
Remember you got this!
Lastly, my favorite trick is this pose! Have your arms out or on your hips and just let yourself feel like a superhero!