I have a crooked mouth, is there a way to fix it? (photos)

Looking at older photos, I've had my crooked mouth/smile for at least 10 years (I am 20). When I try to lift the right side of my face, it won't match the left side no matter how hard I try. I assume it likely has something to do with my genetics, since my mother has a similar mouth, but not as drastic as mine. It really makes me self-conscious. Is there a way to fix it so it matches my left side? What are the treatments or procedures and are they expensive? Thank you.