How to overcome shyness

Hi ladies! Okay so, I’ve signed up for a cna class and got accepted and I’ve prayed and ready to start this journey but my issue with doing anything new is the fact that I am extremely shy . I try to overcome it but it’s like it’s so hard and I hate being shy like I don’t wanna be shy but it’s as if I can’t help it. I’ve talked to my grandma and bestfriend about it and they both said just make conversation with people and I’m gonna try to do that . Any tips or stories on how you overcame shyness would be great! I really don’t want to be shy and it’s crazy cause I’ve been like this my whole life and now I’m grown and still can’t seem to stop being shy😭😭 and honestly, being shy holds you back from a lot of great opportunities