Google “help with addiction”. Honestly there are resources if you’re ready to take that step. “Turning point” are good.
Personally, I’d perhaps go to my doctor because depending on the level of your dependence on the substance you may want a bit of professional support when you stop.
I’m still in pieces because alcohol and drugs stole the person I loved more than anything else. Get the help you need and the life you and those who love you deserve.