It's quite normal to Google your own company name and come up on the first page - because that's your URL and usually is heavily written up in the content. It's the more generic terms that you want to aim for like 'virtual assistant' + your location, etc.
SEO is an ongoing process - once you reach a spot and want to climb higher or maintain you've got to keep doing the work needed to make that happen (ie - linkbuilding, blogging, articles, trading links, etc.)