If you added SSL secure certificated to your website. You need to redirect the visitors from http version to the secured version (HTTPS) to ensure their information is secured.

Many of them getting struggled to redirect http to https in godaddy windows cpanel. So this tutorial may help.

Redirect http to https cpanel/windows hosting

If you are a windows based user you can handle the redirection using web.config file.

In web.config under the system.webserver tag.
for more details: http://www.infinetsoft.com/Post/How-to-convert-http-to-https-Godaddy/3057