redirect when referrer is not current domain

I would like it that a request to my main page at IDeserveAPerfectLife.com,
if the referrer is not from the same domain,
should be redirected.
If the referrer is from the same domain, the request will not be redirected.

My Source URL is — /
my referrer is the Regex expression — /^((?!IDeserveAPerfectLife.com).)+$/igm

I have tested that expression and correctly matches any string not containing the domain name.

Yet requests are not redirected.

The page I need help with: [log in to see the link]