How to tell my mom I want to go to therapy?

I’ve been debating this for a while now, and I think that I’ve decided I want help. I am not depressed or anything, my anxiety is just really bad and it’s stopping me from being myself even around my friends sometimes. I’ve always been so ashamed of it I’ve just pretended like it isn’t there and never told my my mom that I want to fix the way I am. I am not happy with myself and actually have a very low self image. I want to be the best person I can be. I am just embarrassed to ask if I can go to therapy 😣. How do I ask her?