Hi OP. It wasn't very long term (less than a year) and it was over a decade ago, but I had a cocaine addiction too. Coke is scary. Even to this day (well, until a week ago) when I would get super drunk I would start searching for coke - and it's been years since I've even used! So I can imagine it's really hard for you.
Try to find an NA meeting in your area, or if you can, go to an inpatient center. Godspeed.