Hi, just copied this from the FAQ's:
Members can change their username once and only once with no explanation or special permission needed. Simply send a private message (PM) to one of the site's administrators (not DocJohn). Member names have to conform to our community guidelines, be between 4 and 19 characters in length, and not already taken by an existing user. We allow only one username change per individual.
Can be real good to let some emotions go and start over, CONGRATS and WELL DONE on getting to that place of being ready!!!!!

Alison