“not good enough”

Hi Brooke,
I have struggled for months with compare/despair around my coworkers. They have certifications and I don’t. I have tried self-coaching around this and I still struggle. The thoughts of “not good enough” still resurface and create feelings of insecurity and self-doubt. I just don’t know what else to try. I don’t understand why I have attached such meaning to a piece of paper. It almost seems silly to write it out but for some reason it’s a real pain point for me. What can you suggest for next steps for me?