Those who are dependent on substances or activities which have been detrimental to their health need help whether they wish to admit it or not. Most people who find themselves addicted to harmful substances or activities mainly connect themselves with other individuals who have those same issues, that will make it tough to try to guide these people in a helpful way.
What you can do would be to speak to another person, who is not an addict, about the potential choices you must make. You can tell your mother and father, a close buddy or even a minister and make them hear your story. Somehow, with other people’s support, they will assist you to the correct path. Also you must discover good reason to stop, as most addicts just coast through life with no regard for anything at all.