Congratulations with taking the first step: seeing you have a problem. That is a hard one to take. It took me years.
You are the root of your problem, but also of the solution. You can change and become clean.
But it’s difficult. I will not lie about that.
So my advice will be accepting all the help you can get. So can you go to NA like Mike above suggested? Ore see your doctor and open up about your using and ask for help? (And check out your nose ehile you are there too).
For now maybe deleting all the dealer numbers on your phone and getting rid of what’s (maybe) left in your house?
I would begin there if I where you.
If you use the magnifying glass above you can find all the older threads about coke use and how to stop. Coke is not my addiction. But addiction is addiction and you need to change a lot in your life and in person to become and stay sober/clean. Have you read this thread for example: What's YOUR plan? I would highly recommend to.
If you have any questions just ask, there is always someone awake here to answer them.
See you around! 