I think to get a new name you have to re-register. You might PM Kimmydawn or DocJohn and ask if they can change the name for you- otherwise you have to have them delete the old name and sign up with a new name. Only 1 user name is allowed here, unless you Ok it with admin for a privacy/discrete posting.

for new name ideas-
Do you have any hobbies or places like to go or see- like the ocean, lakes, skies , clouds, ??