You put a lot of time and effort into building your Internet home business website.  And, as you know, I am a huge proponent for using a self-hosted WordPress site for your business.  Unfortunately, a lot of Internet home business builders leave their website vulnerable to hackers.  And, hackers can destroy your site; essentially wasting all the hard work you have put into it.  The bottom line is that you need to have a secure username to help ward off hackers.  Here is a short video showing you how to change your username in WordPress.