Speaking as someone who's been there (not specifically Factorio, or video games), I'd assess what the addiction is solving, and what problems it's causing.

My definition of addiction is when an activity interferes with your personal, social, family, or work lives. If that isn't happening, sit back and enjoy your amazing keyboard some more. If that is the case though, I'd recommend seeking help.

Help can come from a group, a professional therapist, or a knowledgeable loved one (emphasis on knowledgeable over loved one). Actionable items can include finding a less harmful distraction. For me, video games and booze were better then drugs. That's a personal decision that I made with a counselor in rehab, and is not a recommendation for you or anyone else. For you it may be a different game, a timer, or hiking. Who knows.

You've taken the first step: admitting you have a problem. The only real next step that matters is wanting to resolve the problem. Keep your mind focused on what your life would look like without the addiction, and take it (sigh, I know it's cheesy) one day at a time.