YHVH The Christ said " This kind {( of demons)} can come forth by nothing, but by prayer and fasting" Mark9:29
If you have difficulty quitting smoking or other addiction pray to YHVH Elohim for help and make a firm rule that if you still have that cigaret or whatever addiction you struggle with you will fast for some period of time for example 24 hours and continue praying during fasting (prayers during fasting are especially powerful). You will be surprised how fast you be free from addiction.
With love to you, your sister, BarBara