Quitting smoking can help to ease back pain. People who smoke, especially heavy smokers, do not have as much blood flow to the spine as those who don't smoke. Without a sufficient amount of blood flow to the spine, your back will hurt.
Unless you have recently had back surgery, it is important that you try to avoid wearing back braces. There is no medical evidence proving that it helps back conditions or pain. In fact, recent studies suggest that it may aggravate certain back conditions and even cause the pain to worsen.