htaccess help

i am having trouble with my htaccess file.

my ssl cert is currently configured to secure my naked domain, only.

so the site is displaying perfectly fine across all browsers whenever someone enters the domain without the "www"

but google has many pages in its search results that include the www

and i can't figure out what i am doing wrong in my htaccess file

i know this is a common problem and an easy fix and i feel stupid for not being able to do this on my own

so i'm happy to pay $25 if someone can spare a few minutes to help me out with this

thank you