How would i remove the overseer from my bank account?

i opened a checking account about a month or two ago and my mother is the overseer. I'm thinking of moving out soon and i don't want her to have access to my account or freeze/close it to get me to move back. my question to you guys is how would i do that? can i do that? since it is my account, and we don't share any money at all she can just track my purchases, etc. my bank is BB&T if that helps, im sure different banks have different policies on this...