how do I change from self employed to just retired

Are you using the Online version or the Desktop program?   Online is only good for 1 return per account.  But you can use the same email address for 5 accounts.  You can start another return in TurboTax Online by:

1. Logging out if you are in your account
2. Choose what TurboTax Online product you want to use for the second return
3. Create your account screen
4. Set up a new login for the second return
5. Start working on the new return

For Desktop…..start a new return.  Go up to File-New.   Are you in the Home & Business version?  You can skip the Business tab.  Just click on Personal.

Be careful not to overwrite your return.  This is important.  If you do another return for someone else like your child or parent and their name is the same or similar to yours then it might overwrite your return.  You have to save each return with different names so you can tell them apart.  Like if your name is John and your son is also named John it will save them with the same name so the second one will overwrite the first return.  Go to File-SaveAs and give it a unique name.