Unfortunately, once you have used your activation code in an account, it is locked to that account. 

Thank you for the quick reply!

I saw your reply to the original poster. I did the same thing (two of use the same computer but have our own turbo tax accounts--I accidentally logged in to the first account that came up, which is a business account). There is really no way to change it? I want to import my information from last year that is on my account. What suggestions do you have to help me? Thank you in advance.

Again, once you have used your activation code in an account, it is locked to that account.  There is no way to move returns between accounts either.