I am noticing a lot of self defeating dialogue happening with you. I think that it is important to know internally that you can do this. You can get to a better place and you can overcome these addictions.
If you continually tell yourself negative statements then those negative statements are going to be what transpires. Lets remove the "cant" and replace it with "can". Replace "nothing seems to work" with "something will work". Have faith and hope for a different answer ( as I write this I am listening to my own words and absorbing them)
You can do this. Baby steps to a brighter future.