A man needed water for his family. He began digging a well in his yard, which was very hard work. After digging 6 or 7 feet he ran into a bed of sand. He thought, "I can't find water here." So he began digging another well a little ways away. This time just when he thought he must be close, he ran into a rock formation. He thought, "I must dig somewhere else." He continued, all around a large area, digging holes, hitting obstacles and starting over. He never found water.
To quit smoking, it's the same. You have to keep digging when you run into a hard spot. You can begin where you are, no matter where you are. You can use any tools that you like. You will find what you are looking for If you do the work.