Crack is terribly addictive, but it's also an addiction that can be overcome. The way to overcome a crack addiction is first to admit that you have a problem. That's very difficult for people who are addicted, because there are these elements of denial, that you don't want to admit that you have a problem and there's rationalization. That you may rationalize that, "Oh, your using isn't that bad. It's not really having a negative impact on your life." So the key element here is admitting that you have a problem, and then seeking the proper professional, to help you.
Addictions thrive in isolation and secrecy, so the key element in solving an addictive disorder is reaching out to somebody. Sharing that secret with somebody else and developing your program of recovery. One of the most effective programs for recovery are 12-step programs. Narcotics Anonymous, where people plug into a community of other people who are also on the journey of recovery and have found recovery in their life, and have been able to stop using crack cocaine and have been able to sustain, not using crack cocaine for an extended period of time, and hopefully for the rest of their life.