They are trying to do their best to get themselves out of the grip of addiction. People try to quit drugs cold turkey without rehab, but fear of the pain of withdrawals can keep them from following through. For people who have tried and failed to do it cold turkey, rehab may be the best option. Seeking help is a sign of strength. Be honest with yourself and the addiction at hand. Understanding the warning signs allows you to take the first step in recovery sooner rather than later.